US20120236023A1 - Information storage medium, terminal device, display system, and a method for controlling a terminal device - Google Patents
Information storage medium, terminal device, display system, and a method for controlling a terminal device Download PDFInfo
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- US20120236023A1 US20120236023A1 US13/421,458 US201213421458A US2012236023A1 US 20120236023 A1 US20120236023 A1 US 20120236023A1 US 201213421458 A US201213421458 A US 201213421458A US 2012236023 A1 US2012236023 A1 US 2012236023A1
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- image
- display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
- H04N9/3194—Testing thereof including sensor feedback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1813—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
- H04L12/1822—Conducting the conference, e.g. admission, detection, selection or grouping of participants, correlating users to one or more conference sessions, prioritising transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/567—Multimedia conference systems
Definitions
- the present invention relates to an information storage medium, a terminal device, a display system, and a method for controlling a terminal device or the like.
- JP-A-2003-280087 discloses a technique of displaying, by a projector provided with an image muting function, a total black image that shows the entire screen in black or a user logo image during an image muting period.
- Seiko Epson Corporation's product manual download online
- Liquid Crystal Projector EB-1775W User's Manual searched on Mar.
- An advantage of some aspects of the invention is to provide a program, an information storage medium, a terminal device and a display system or the like with which switching to a predetermined pattern image such as total black image is realized by easy operations.
- An aspect of the invention is directed to an information storage medium readable by a computer provided in a terminal device which establishes connection with a display device and sets a source of an image to be displayed on the display device, storing a program that causes the computer to function as: an input unit to which operation information is inputted; an image generating unit which generates a configuration designation image including a position designation area corresponding to a display area of the display device and an icon arrangement area where an icon corresponding to an image that can be designated in relation to the position designation area is arranged; and a setting unit which designates an icon to be arranged in the icon arrangement area in relation to the position designation area on the basis of the operation information and thereby sets an image corresponding to the icon as a display image in the display area.
- the icon includes a first icon corresponding to an image supplied from the terminal device connected with the display device and a second icon corresponding to a predetermined pattern image.
- an image source and an icon of a pattern image source that is allocated virtually as an image source are arranged in the configuration designation image, and an icon can be designated in relation to the position designation area on the basis of user's operation information.
- an image showing a predetermined pattern image can be displayed by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may be configured such that the configuration of an overall image of the predetermined pattern image is changed by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may be configured such that the overall image including images from plural terminal devices is displayed correctly.
- This aspect of the invention may be configured such that an arbitrary pattern image is generated on the terminal device side and can be displayed by the display device, without applying any load of generating the pattern image to the display device side.
- This aspect of the invention may be configured such that an arbitrary pattern image can be generated and displayed on the display device side, without applying any load of generating the pattern image to the terminal device side.
- This aspect of the invention may be configured such that part or the whole of an image displayed by the display device is temporarily muted by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may be configured such that part or the whole of a display area of the display device is temporarily brightened by an intuitive operation similar to handling of other image sources.
- meetings and presentations can be enriched further.
- This aspect of the invention may be configured such that an image showing a message to other participants attending a meeting, for example, is displayed by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may be configured such that a preferred image such as a wallpaper is displayed by an intuitive operation similar to handling of other image sources.
- Another aspect of the invention is directed to a terminal device that is connected with a display device and sets an image to be displayed on the display device, including: an input unit to which operation information is inputted; an image generating unit which generates a configuration designation image including a position designation area corresponding to a display area of the display device and an icon arrangement area where an icon corresponding to an image that can be designated in relation to the position designation area is arranged; and a setting unit which designates an icon to be arranged in the icon arrangement area in relation to the position designation area on the basis of the operation information and thereby sets an image corresponding to the icon as a display image in the display area.
- the icon includes a first icon corresponding to an image supplied from the terminal device connected with the display device and a second icon corresponding to a predetermined pattern image.
- an image source and an icon of a pattern image source that is allocated virtually as an image source are arranged in the configuration designation image, and an icon can be designated in relation to the position designation area on the basis of user's operation information.
- an image showing a predetermined pattern image can be displayed by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may provide a display system which displays an image showing a predetermined pattern image by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may provide a display system which displays an image showing a predetermined pattern image by an intuitive operation similar to handling of other image sources without applying any load to the display device side.
- This aspect of the invention may provide a display system which displays an image showing a predetermined pattern image by an intuitive operation similar to handling of other image sources without applying any load to the terminal device side.
- FIG. 1 shows an example of the configuration of a display system according to a first embodiment.
- FIG. 2 is a functional block diagram showing an example of the configuration of a projector shown in FIG. 1 .
- FIG. 3 is a functional block diagram showing an example of the configuration of a PC shown in FIG. 1 .
- FIG. 4 is a flowchart showing an example of an image display procedure in the PC according to the first embodiment.
- FIG. 5 is a flowchart showing an example of an image display procedure in the projector according to the first embodiment.
- FIG. 6 is a sequence diagram showing exchange of information between the PC and the projector according to the first embodiment.
- FIG. 7 shows an example of a configuration designation image according to the first embodiment.
- FIG. 8 is an explanatory view showing a drag-and-drop operation by a participant according to the first embodiment.
- FIG. 10 shows another example of image transition on each PC and the projector according to the first embodiment.
- FIG. 11 schematically shows an example of an overall image in a case where an icon showing a user logo image is designated as a virtual source.
- FIG. 12 schematically shows an example of an overall image in a case where an icon showing text information is designated as a virtual source.
- FIG. 15 is a flowchart showing an example of an image display procedure in the PC according to the second embodiment.
- FIG. 17 is a sequence diagram showing exchange of information between the PC and the projector according to the second embodiment.
- FIG. 18 shows an example of a configuration designation image according to a modification of the first embodiment and the second embodiment.
- a projector is used as an example of the display device according to the invention
- a personal computer hereinafter PC
- the invention is not limited to these examples.
- FIG. 1 shows an example of a configuration of a display system according to a first embodiment of the invention.
- This display system 10 includes a projector (in a broad sense, a display device) 100 , and PCs (in a broad sense, terminal devices) 200 - 1 to 200 - 4 .
- the projector 100 and the PCs 200 - 1 to 200 - 4 are wirelessly connected via an access point 300 .
- the projector 100 can projects, on a screen SCR, an overall image 20 including up to four individual images 30 to 33 based on image information from the PCs 200 - 1 to 200 - 4 .
- each of four participants (users) who attend a meeting can change the configuration of the individual images 20 to 33 in the overall image 20 by operating an icon or the like of a configuration designation image displayed on the PC allocated to each participant.
- PC 200 an image displayed on the screen of each participant's PC is displayed in a corresponding area in the overall image 20 .
- the PCs 200 - 1 to 200 - 4 are assumed to have the same configuration and each of the PCs is referred to as PC 200 when appropriate.
- FIG. 2 shows a functional block diagram showing an example of the configuration of the projector 100 shown in FIG. 1 .
- the projector 100 includes a display-side communication unit (receiving unit) 110 , a display-side information generating unit 120 , a display-side image generating unit 130 , a display-side storage unit 140 , a display-side update unit 150 , and a projection unit (display-side display unit) 190 .
- the display-side storage unit 140 stores image data 142 , image configuration data 144 , and device management data 146 or the like.
- the image data 142 includes image information or the like from the PCs 200 - 1 to 200 - 4 .
- the image configuration data 144 represents the configuration of the overall image 20 and the configuration designation image.
- the device management data 146 represents a communication target device.
- the display-side communication unit 110 communicates with the PCs 200 - 1 to 200 - 4 via the access point 300 and also functions, for example, as a receiving unit which receives image information or the like from each PC.
- the display-side information generating unit 120 generates various kinds of information to be transmitted to the PCs 200 - 1 to 200 - 4 .
- the display-side image generating unit 130 generates image information corresponding to an image to be displayed on the projection unit 190 . At this time, the display-side image generating unit 130 generates the image information using the image data 142 .
- the display-side update unit 150 performs processing to update the data in the display-side storage unit 140 .
- the projection unit 190 projects the image generated by the display-side image generating unit 130 on the screen SCR.
- each unit forming the projector 100 may be realized by hardware.
- the functions of the display-side communication unit 110 are realized by a wireless communication unit or the like.
- the functions of the display-side information generating unit 120 and the display-side update unit 150 are realized by a central processing unit (hereinafter CPU) or the like.
- the functions of the display-side image generating unit 130 are realized by an image processing circuit or the like.
- the functions of the display-side storage unit 140 are realized by a random access memory (hereinafter RAM) or the like.
- the projection unit 190 is realized by a lamp, a liquid crystal panel, a liquid crystal drive circuit, a lens and the like.
- FIG. 3 shows a functional block diagram showing an example of the configuration of the PC 200 shown in FIG. 1 .
- the PC 200 includes a terminal-side communication unit (transmitting unit) 210 , a terminal-side information generating unit 220 , a terminal-side image generating unit 230 , a terminal-side storage unit 240 , a terminal-side update unit 250 , an input unit 260 , a pattern image generating unit (pattern image source) 270 , and a terminal-side display unit 290 .
- the terminal-side information generating unit 220 includes a source setting unit (setting unit) 222 and an output processing unit 224 .
- the terminal-side storage unit 240 stores image data 242 , image configuration data 244 , and device management data 246 or the like.
- the image data 242 is image information and the like.
- the image configuration data 244 represents the configuration of the overall image 20 and the configuration designation image.
- the device management data 246 represents a communication target device.
- the terminal-side communication unit 210 communicates with the projector 100 via the access point 300 and also functions, for example, as a transmitting unit which transmits image information or the like to the projector 100 .
- the terminal-side information generating unit 220 generates various kinds of information to be transmitted to the projector 100 .
- the source setting unit 222 performs setting processing of a source of an image that forms the overall image 20 .
- the output processing unit 224 performs output processing of various kinds of information to the projector 100 .
- the terminal-side image generating unit 230 generates image information corresponding to an image to be displayed on the screen of each participant's PC. For example, the terminal-side image generating unit 230 generates the image information using the image data 242 .
- the terminal-side update unit 250 performs processing to update the data in the terminal-side storage unit 240 .
- operation information is inputted by the participant.
- the pattern image generating unit 270 generates image information corresponding to a predetermined pattern image.
- the predetermined pattern image may be a total black image, total white image, user logo image, or an image showing text information (text image) or the like.
- the pattern image generating unit 270 generates the image information using the image data 242 .
- the terminal-side display unit 290 displays the image generated by the terminal-side image generating unit 230 or the pattern image generated by the pattern image generating unit 270 .
- the functions of the pattern image generating unit 270 may be provided in the terminal-side image generating unit 230 .
- each unit forming the PC 200 may be realized by hardware.
- the functions of the terminal-side communication unit 210 are realized by a wireless communication unit or the like.
- the functions of the terminal-side information generating unit 220 and the terminal-side update unit 250 are realized by a CPU or the like.
- the functions of the input unit 260 are realized by a USB (universal serial bus) port or the like connected to a keyboard or mouse.
- the functions of the terminal-side image generating unit 230 and the pattern image generating unit 270 are realized by an image processing circuit or the like.
- the functions of the terminal-side storage unit 240 are realized by a RAM or the like.
- the functions of the terminal-side display unit 290 are realized by a backlight, a liquid crystal panel and a liquid crystal drive circuit and the like.
- the computer of the PC 200 may function as the terminal-side image generating unit 230 or the like by reading a program stored in an information storage medium 280 .
- an information storage medium 280 may be, for example, a CD-ROM (compact disk read only memory), DVD-ROM (digital versatile disk read only memory), ROM (read only memory), RAM, HDD (hard disk drive) or the like.
- the PC 200 displays a configuration designation image and participants of a meeting carries out an operation while viewing the configuration designation image.
- a configuration change request for the overall image is made to the projector 100 .
- FIG. 4 shows a flowchart illustrating an example of an image display procedure in the PC 200 according to the first embodiment.
- FIG. 5 shows a flowchart illustrating an example of an image display procedure in the projector 100 according to the first embodiment.
- FIG. 6 shows a sequence diagram illustrating exchange of information between the PC 200 and the projector 100 according to the first embodiment. In FIG. 6 , steps corresponding to FIG. 4 and FIG. 5 are shown as well.
- the participant of the meeting operates the keyboard, mouse or the like of the participant's PC 200 and thereby gives an instruction to execute a projector search program in order to connect this PC 200 to the projector 100 .
- the projector search program is assumed to be installed in the PC 200 in advance.
- the terminals-side information generating unit 220 generates state confirmation information to confirm the connection state or the like of each device in the network, based on the information indicating the execution instruction from the input unit 260 .
- the terminal-side communication unit 210 transmits the state confirmation information to the projector 100 and receives state notification information indicating the connection state or the like of each device from the projector 100 .
- the terminal-side update unit 250 updates the device management data 246 based on the state notification information.
- the terminal-side image generating unit 230 generates a search image showing the result of search for the projector 100 based on the image data 242 and the device management data 246 .
- the terminal-side display unit 290 displays the search image (step S 1 ).
- the state, projector name, IP (internet protocol) address and the like of the projector 100 , and a participation button image or the like for the participant to attend the meeting (for connecting the PC 200 to the projector 100 ) are shown.
- the participant uses the mouse or the like of the PC 200 to click the participation button image in the search image and thereby gives an instruction to participate in the meeting.
- the terminal-side information generating unit 220 generates participation request information based on the information indicating the participation instruction from the input unit 260 .
- the terminal-side communication unit 210 transmits the participation request information to the projector 100 and receives state notification information from the projector 100 .
- the terminal-side update unit 250 updates the device management data 246 based on the state notification information (step S 2 ).
- the terminal-side update unit 250 determines whether image configuration information indicating a configuration of a configuration designation image is received by the terminal-side communication unit 210 from the projector 100 or not (step S 3 ). When image configuration information is received (step S 3 : Y), the terminal-side update unit 250 updates the image configuration data 244 based on the image configuration information.
- the terminal-side image generating unit 230 generates a configuration designation image based on the image configuration data 244 , and the terminal-side display unit 290 displays the configuration designation image (step S 4 ).
- FIG. 7 shows an example of the configuration designation image in the first embodiment.
- This configuration designation image is an image displayed on each of the screens of the PCs 200 - 1 to 200 - 4 of FIG. 1 .
- the computer name of the PC 200 - 1 is “CPA”
- the computer name of the PC 200 - 2 is “CPB”
- the computer name of the PC 200 - 3 is “CPC”
- the computer name of the PC 200 - 4 is “CPD”.
- FIG. 7 shows an example of an image displayed on the screen of the PC 200 - 1 of FIG. 1 .
- a configuration designation image 500 includes a display mode selection area 510 , a source selection area 530 , and an icon arrangement area 540 .
- display mode button images 512 , 514 , 516 for changing the number of individual images that form the overall image 20 are arranged.
- the display mode button image 512 is a button image for displaying one image in full screen without dividing the display area of the overall image 20 .
- the display mode button image 514 is a button image for simultaneously displaying up to two images by dividing the overall image 20 .
- the display mode button image 516 is a button image for simultaneously displaying up to four images by dividing the overall image 20 .
- a position designation area corresponding to a projection area of the projector 100 (display area of the display device) is provided.
- one or plural position designation areas corresponding to one or plural division display areas formed by dividing the overall image 20 are provided.
- four position designation areas 531 to 534 in two rows by two columns are provided corresponding to the individual images 30 to 33 forming the overall image 20 .
- a rectangular cursor image 590 or the like is arranged which shifts among the position designation areas 531 to 534 according to the participant's operation and allows the participant to select an individual image to be displayed.
- a display button image 520 is a button image for giving an instruction to display the overall image 20 .
- the pause button image 524 is a button image for giving an instruction to maintain the display of the current overall image 20 .
- the icons 550 , 552 , 554 , 556 are icons that represent the PCs 200 - 1 to 200 - 4 having connection established with the projector 100 , respectively, as image sources (video sources).
- the icons 550 , 552 , 554 , 556 are first icons corresponding to images supplied from the PCs 200 - 1 to 200 - 4 connected with the projector 100 .
- the icon 558 is an icon that represents a pattern image source (pattern vide source) showing a total black image. That is, the icon 558 virtually allocates the pattern image generating unit 270 generating image information corresponding to a total black image held by the PC 200 , as an image source, and indicates the pattern image generating unit 270 as a virtual source for selecting a source by a similar operation to operations with respect to image sources.
- the icon 560 is an icon that represents a pattern image source showing a total white image. That is, the icon 560 virtually allocates the pattern image generating unit 270 generating image information corresponding to a total white image held by the PC 200 , as an image source, and indicates the pattern image generating unit 270 as a virtual source.
- the icons 558 and 560 are second icons corresponding to predetermined pattern images.
- an icon that represents a pattern image source showing a user logo image and an icon that represents a pattern image source showing text information that is registered in advance may be arranged as second icons, in place of or in addition to the icons 558 , 560 .
- the configuration designation image 500 includes menu images representing “File”, “Tool”, and “Help”, an image showing a connected projector name, and so on.
- FIG. 7 shows that the projector name of the projector 100 is “EMP00000000”.
- FIG. 7 shows that, in the source selection area 530 , a mark image 570 indicating “CPA” is arranged in the top left position designation area 531 and a mark image 572 indicating “CPB” is arranged in the top right position designation area 532 . Also, in the source selection area 530 , a mark image 574 indicating “CPC” is arranged in the bottom left position designation area 533 and no mark image is arranged in the bottom right position designation area 534 . In this case, there are three participants in the meeting. The background of the mark images 570 , 572 , 574 is white when these images are currently displayed in the overall image 20 .
- the background of the mark images 570 , 572 , 574 is grey when these images are not currently displayed in the overall image 20 .
- the background of the mark images 570 , 572 is white, indicating that the two individual images of the PCs 200 - 1 , 200 - 2 are arranged side by side in the overall image 20 .
- the icon arrangement area 540 also includes an own-device area 542 and an other-device area 544 .
- the icons 552 , 554 , 556 indicating the other PCs 200 from the left in participation order (in order of connecting to the projector 100 ), and the icons 558 , 560 indicating the virtual sources are arranged.
- the icon 550 indicating the own device in a fixed manner irrespective of participation order is arranged.
- the background of the icons 550 , 552 , 554 , 556 changes according to the display state in the source selection area 530 . For example, in the example shown in FIG.
- the background is shown in white.
- the background is shown in grey.
- the icon 556 which is in a non-display state where the mark image thereof is not displayed, nothing is shown as the background.
- the icons 558 , 560 too, the color of the background may be changed between the currently displayed state and the non-display state.
- Each participant operating each PC 200 can display and operate the search image (not shown) and the configuration designation image 500 on the screen of each PC 200 .
- Each participant changes the image source of an image corresponding to each position designation area in the source selection area 530 , for example, by drag-and-dropping the icons 550 , 552 , 554 , 556 , 558 , 560 from the icon arrangement area 540 to the source selection area 530 . That is, each participant can change the configuration of the overall image 20 by drag-and-dropping the icon of a desired image source to each position designation area in the source selection area 530 .
- FIG. 8 shows an explanatory view illustrating the drag-and-drop operation by the participants according to the first embodiment.
- FIG. 8 shows the configuration designation image 500 similar to FIG. 7 .
- the same parts as in FIG. 7 are denoted by the same reference numerals and the description thereof will be omitted when appropriate.
- each participant lays the mouse pointer over the position of the “CPA” icon 550 and clicks on this icon, and in this state, each participant moves the mouse pointer to the position designation area 531 and lifts the finger from the mouse.
- the icon 550 is left in the icon arrangement area 540
- an icon in the same form as the icon 550 moves interlocked with the mouse pointer.
- the mark image 570 corresponding to the PC 200 - 1 can be arranged in the position designation area 531 (see FIG. 7 ). Consequently, the source setting unit 222 performs processing to designate the displaying of an image of an image source or pattern image source corresponding to the icon moved by the drag-and-drop operation, in the display area of the overall image 20 .
- the source setting unit 222 designates an icon to be arranged in the icon arrangement area 540 in relation to the position designation area on the basis of operation information, and thereby sets an image source or pattern image source corresponding to the icon, as a source of a display image in the display area of the overall image 20 .
- the source setting unit 222 sets an image source or pattern image source corresponding to an icon designated in relation to position designation area on the basis of operation information, as a source of a display image in the division display area corresponding to each position designation area.
- the overall image 20 including the individual image of the PC 200 - 1 can be projected by the projector 100 .
- the terminal-side information generating unit 220 determines whether there is a change in the configuration by a configuration designation operation or not, based on the information from the input unit 260 (step S 5 ). When there is a change in the configuration (step S 5 : Y), the terminal-side information generating unit 220 generates configuration change request information that reflects the result designated by the source setting unit 222 .
- the terminal-side communication unit 210 transmits the configuration change request information to the projector 100 (step S 6 ). That is, in step S 6 , the PC 200 sends a change request to the projector 100 to change the designation of the image source or pattern image source in relation to the position designation area.
- the terminal-side information generating unit 220 determines whether transmission start request information for image information is received by the terminal-side communication unit 210 from the projector 100 or not (step S 7 ).
- transmission start request information is received (step S 7 : Y)
- the PC 200 determines that the foregoing change request is admitted, as a response to the change request made in step S 6 .
- the terminal-side information generating unit 220 determines whether the configuration change admitted in step S 7 includes a virtual source or not (step S 8 ).
- the pattern image generating unit 270 When the configuration change includes a virtual source (step S 8 : Y), the pattern image generating unit 270 generates image information of a pattern image corresponding to the virtual source included in the configuration change.
- the output processing unit 224 performs output processing including an instruction to transmit the image information from the terminal-side communication unit 210 .
- the terminal-side communication unit 210 transmits the image information to the projector 100 according to the instruction from the output processing unit 224 (step S 9 ). At this point, the terminal-side display unit 290 displays an image corresponding to the image information.
- the output processing unit 224 sends a change request to the projector 100 to change the designation of an image source or pattern image source in relation to the position designation area, and performs processing to output image information to the projector 100 according to a response to the change request.
- the output processing unit 224 performs processing to output image information corresponding to a predetermined pattern image to the projector 100 when a change request such that an icon corresponding to a pattern image source is designated in relation to the position designation area is admitted on the basis of a response from the projector 100 .
- the output processing unit 224 when the virtual source indicates a source for displaying a total black image, the output processing unit 224 performs output processing including an instruction to transmit image information corresponding to the total black image from the terminal-side communication unit 210 .
- the total black image may be an image with all the constituent pixels being black, or an image with all the constituent pixels having gradation levels close to black, or an image partly including other pixels than black.
- the output processing unit 224 when the virtual source indicates a source for displaying a total white image, performs output processing including an instruction to transmit image information corresponding to the total white image from the terminal-side communication unit 210 .
- the total white image may be an image with all the constituent pixels being white, or an image with all the constituent pixels having gradation levels close to white, or an image partly including other pixels than white.
- the output processing unit 224 performs output processing including an instruction to transmit image information corresponding to the text information from the terminal-side communication unit 210 .
- the output processing unit 224 may instruct the projector 100 via the terminal-side communication unit 210 to directly project a user logo image that is registered in advance in the projector 100 , without transmitting image information corresponding to the user logo image to the projector 100 .
- the terminal-side image generating unit 230 When the configuration change includes no virtual source in step S 8 (step S 8 : N), the terminal-side image generating unit 230 generates image information representing a graph image or the like on a desktop shown in FIG. 1 , based on the image data 242 .
- the terminal-side communication unit 210 transmits the image information to the projector 100 (step S 10 ).
- the terminal-side display unit 290 displays an image corresponding to the image information.
- the terminal-side image generating unit 230 generates the graph image or the like shown in FIG. 1 , continuously captures the graph image or the like, and stores the graph image or the like in the terminal-side storage unit 240 as the image data 242 .
- the pattern image generating unit 270 may also continuously capture a pattern image and store the pattern image in the terminal-side storage unit 240 as pattern image data, similarly to the terminal-side image generating unit 230 .
- the terminal-side information generating unit 220 determines whether transmission stop request information for image information is received by the terminal-side communication unit 210 from the projector 100 or not (step S 11 ).
- transmission stop request information is received (step S 11 : Y)
- the terminal-side image generating unit 230 or the pattern image generating unit 270 stops generating image information and the terminal-side communication unit 210 stops transmitting image information (step S 12 ).
- the terminal-side image generating unit 230 or the pattern image generating unit 270 may stop capturing images.
- the participant can disconnect the communication of the participant's own PC 200 by selecting “Leave” from a sub-menu of “Tool” in the configuration designation image 500 . Moreover, the participant can disconnect the communication of all the PCs 200 by selecting “End Meeting” from the sub-menu.
- the terminal-side information generating unit 220 determines whether “End Meeting” is selected or not, based on operation information from the input unit 260 (step S 13 ). When “End Meeting” is selected (step S 13 : Y), the terminal-side information generating unit 220 generates end request information.
- the terminal-side communication unit 210 transmits the end request information to the projector 100 (step S 14 ).
- step S 13 When “End Meeting” is not selected (step S 13 : N), the terminal-side information generating unit 220 determines whether end notification information transmitted from the projector 100 in response to the reception of end request information is received by the terminal-side communication unit 210 or not (step S 15 ). Following step S 14 , or when end notification information is received (step S 15 : Y), the PC 200 ends the series of processing (END). When end notification information is not received in step S 15 (step S 15 : N), the PC 200 returns to step S 3 and repeats execution of the processing of steps S 3 to S 15 .
- the terminal-side information generating unit 220 may generates a confirmation image showing character strings such as “All the users attending the meeting will be disconnected from the projector and the search screen will be back. Do you want to end the meeting?” Also, when end notification information is received in step S 15 , the terminal-side information generating unit 220 may generate a notification image showing character strings such as “Other users have ended the meeting. The search screen will be back.”
- the display-side information generating unit 120 determines whether state confirmation information is received by the display-side communication unit 110 from the PC 200 or not (step P 1 ). When state confirmation information is received (step P 1 : Y), the display-side information generating unit 120 generates state notification information based on the device management data 146 . The display-side communication unit 110 transmits the state notification information to the PC 200 of the transmission source (step P 2 ).
- the display-side update unit 150 determines whether participation request information is received by the display-side communication unit 110 from the PC 200 or not (step P 3 ).
- the display-side update unit 150 updates the device management data 146 based on the participation request information.
- the display-side information generating unit 120 generates state notification information based on the device management data 146 and generates image configuration information based on the image configuration data 144 according to the circumstances.
- the display-side communication unit 110 transmits the state notification information and the image configuration information to each of the currently participating PCs 200 (step P 4 ).
- the display-side update unit 150 determines whether configuration change request information is received by the display-side communication unit 110 from the PC 200 or not (step P 5 ).
- the display-side update unit 150 updates the image configuration data 144 based on the configuration change request information.
- the display-side information generating unit 120 generates image configuration information based on the image configuration data 144 and generates transmission start request information and transmission stop request information according to the circumstances. More specifically, for example, when a new individual image needs to be displayed, the display-side information generating unit 120 generates transmission start request information to the PC 200 that is the transmission source of image information of the individual image.
- the display-side information generating unit 120 When an individual image no longer needs to be displayed, the display-side information generating unit 120 generates transmission stop request information to the PC 200 that is the transmission source of image information of the individual image.
- the display-side communication unit 110 transmits the image configuration information, the transmission start request information and the transmission stop request information to each of the currently participating PCs 200 .
- the display-side image generating unit 130 generates an overall image 20 according to the configuration of the image, based on the image data 142 and the image configuration data 144 , and the projection unit 190 projects the overall image 20 (step P 6 ).
- the display-side update unit 150 determines whether image information is received by the display-side communication unit 110 from the PC 200 or not (step P 7 ).
- image information is received (step P 7 : Y)
- the display-side update unit 150 updates the image data 142 based on the image information.
- the display-side image generating unit 130 generates an overall image 20 based on the image data 142 and the image configuration data 144
- the projection unit 190 projects the overall image 20 (step P 8 ).
- the projection unit 190 projects an overall image 20 including a user log image generated by the display-side image generating unit 130 .
- step P 8 the display-side information generating unit 120 determines whether end request information is received by the display-side communication unit 110 from the PC 200 or not (step P 9 ).
- step P 9 the display-side information generating unit 120 generates end notification information.
- the display-side communication unit 110 transmits the end notification information to each PC 200 .
- the display-side update unit 150 updates the device management data 146 and the image configuration data 144 , for example, to initial states or the like (step P 10 ).
- step P 11 the projector 100 determines whether a projection end instruction is given or not (step P 11 ).
- step P 11 the projector 100 ends the foregoing series of processing (END).
- step P 11 the projector 100 returns to step P 1 and the display-side information generating unit 120 determines whether state confirmation information is received by the display-side communication unit 110 from the PC 200 or not.
- FIG. 9 shows an example of image transition on each PC and the projector in the first embodiment.
- FIG. 9 schematically shows configuration designation images displayed on the screen of each PC and overall images 20 projected by the projector 100 at consecutive time points t 1 to t 4 .
- the PC 200 - 1 (“CPA”) displays an image A
- the PC 200 - 2 (“CPB”) displays an image B
- the PC 200 - 3 (“CPC”) displays an image C
- the PC 200 - 4 (“CPD”) displays an image D in the respective division display areas formed by dividing the display area of the overall image 20 .
- FIG. 10 shows another example of image transition on each PC and the projector in the first embodiment.
- FIG. 10 schematically shows configuration designation images displayed on the screen of each PC and overall images 20 projected by the projector 100 at consecutive time points t 5 to t 8 after time point t 4 .
- the PCs 200 - 1 to 200 - 4 display images A to D, respectively, as in FIG. 9 .
- the projector 100 does not automatically project the image B and continues projecting the overall image 20 including the image A of “CPA”. That is, the projector 100 automatically projects the image of the first participating PC 200 , irrespective of whether there is an explicit display instruction or not, but does not project the images of the second and subsequent participating PCs 200 unless there is an explicit display instruction.
- the participant who operates “CPA” drag-and-drops the icon of “CPB” to the top right area of the source selection area 530 in the configuration designation image 500 displayed on the PC 200 - 1 .
- the overall image 20 projected by the projector 100 does not change, but a mark image corresponding to that icon is added to the source selection area 530 .
- the participant who operates “CPA” clicks on the two-screen display mode button image 512 in the configuration designation image 500 displayed on the PC 200 - 1 . Consequently, the projector 100 projects an overall image 20 including the image A and the image B corresponding to the mark images located at the row position where the cursor image 590 exists.
- the background of the top right position designation area 532 in the source selection area 530 on each PC 200 changes from grey to white.
- CPC and CPD similarly participate and the participant who operates “CPA” drag-and-drops the icons of CPC and CPD to the bottom left area and the bottom right area of the source selection area 530 in the configuration designation image 500 displayed on the PC 200 - 1 .
- the participant who operates “CPA” clicks on the four-screen display mode button image 514 in the configuration designation image 500 displayed on the PC 200 - 1 the projector 100 projects an overall image 20 including the image A, the image B, the image C and the image D corresponding to the respective mark images provided in the source selection area 530 .
- the background of the bottom left position designation area 533 and the bottom right position designation area 534 in the source selection area 530 on each PC 200 changes from grey to white.
- the participant who operates “CPA” drag-and-drops the icon showing a total black image to the top left area of the source selection area in the configuration designation image 500 displayed on the PC 200 - 1 .
- the projector 100 projects an overall image 20 including a total black image, the image B, the image C and the image D, as designated in the source selection area 530 .
- the image A of “CPA” can be temporarily muted by an intuitive operation similar to handling of other image sources.
- the participant who operates “CPA” drag-and-drops the icon of virtual source showing a total black image to the bottom right area of the source selection area in the configuration designation image 500 displayed on the PC 200 - 1 .
- the projector 100 projects an overall image 20 including a total black image, the image B, the image C, as designated in the source selection area 530 .
- the image D of “CPD” can be temporarily muted by an intuitive operation similar to handling of other image sources.
- the participant who operates “CPA” drag-and-drops the icon of virtual source showing a total black image to the top right area and the bottom left area of the source selection area in the configuration designation image 500 displayed on the PC 200 - 1 .
- the projector 100 projects an overall image 20 that is entirely black, as designated in the source selection area 530 .
- the overall image 20 can be temporarily muted by an intuitive operation similar to handling of other image sources.
- the participant who operates “CPA” drag-and-drops the icon of virtual source showing a total white image to the top right area and the bottom right area of the source selection area in the configuration designation image 500 displayed on the PC 200 - 1 .
- the projector 100 projects an overall image 20 with a black left half and a white right half, as designated in the source selection area 530 .
- the overall image 20 including a total white image can be projected by an intuitive operation similar to handling of other image sources.
- the display area of the total white image is brightened. Therefore, for example, when a white board is used as a projection surface, what is written on the white board can become more visible and meetings and presentations can be enriched further.
- the icon of virtual source showing a total white image is drag-and-dropped to the four position designation areas, the projector 100 can project, for example, an overall image 20 that is entirely white.
- FIG. 10 illustrates an example where a total black image or a total white image is shown as a virtual source, an image including a user logo image or text information as a virtual source may also be displayed.
- FIG. 11 schematically shows an example of the overall image 20 projected by the projector 100 in the case where an icon showing a user logo image as a virtual source is designated.
- images corresponding to each PC are shown, as in FIG. 9 or FIG. 10 .
- the participant who operates “CPA” drag-and-drops the icon showing a user logo image to the top left area of the source selection area in the configuration designation image 500 displayed on the PC 200 - 1 .
- the projector 100 projects an overall image 20 including a user logo image that is registered in advance, the image B, the image C and the image D, as designated in the source selection area 530 .
- a preferred image such as a wallpaper can be displayed by an intuitive operation similar to handling of other image sources.
- FIG. 12 schematically shows an example of the overall image 20 projected by the projector 100 in the case where an icon showing text information as a virtual source is designated.
- images corresponding to each PC are shown, as in FIG. 9 or FIG. 10 .
- the participant who operates “CPA” drag-and-drops the icon showing a user logo image to the bottom right area of the source selection area in the configuration designation image 500 displayed on the PC 200 - 1 .
- the projector 100 projects an overall image 20 including the image A, the image B, the image C and text information that is registered in advance, as designated in the source selection area 530 .
- information showing “Away” is registered in advance as text information.
- the PC 200 can generate and display the configuration designation image 500 including the source selection area 530 for designating the configuration of the individual images 30 to 33 in the overall image 20 displayed by the projector 100 .
- the configuration of the overall image 20 can be presented in a way that is easy to understand to participants of the meeting.
- a pattern image generating unit which generates image information corresponding to a predetermined pattern image is allocated virtually as an image source and is shown in the form of an icon that can be designated.
- a predetermined pattern image can be displayed in the overall image by an intuitive operation similar to handling of other image sources.
- the PC 200 generates an image that shows the icon 550 of the own device in a different form from the icons 552 to 556 of the other terminal devices and the virtual source icons 558 , 560 , in the icon arrangement area 540 .
- the participant can more easily operate the icon 550 of the own device that is operated more frequently than the icons 552 to 556 of the other terminal devices and the virtual source icons 558 , 560 . Therefore, when the overall image 20 including individual images based on image information from the PC 200 is displayed by the projector 100 , operations for changing the configuration of the overall image 20 can be carried out more easily.
- each participant changes the configuration of the overall image 20 using each participant's PC 200 , each participant can carry out desired operations efficiently.
- the participant can more easily operate the icon of the own device that is operated more frequently than the icons 552 to 556 of the other terminal devices and the icons 558 , 560 indicating virtual sources.
- the projector 100 displays individual images based on image information from the first PC 200 that transmitted participation request information, irrespective of whether there is an explicit display instruction or not. Meanwhile, individual images based on image information from the second and subsequent PCs 200 that transmitted participation request information are not displayed if there is no explicit display instruction, and these individual images are displayed when there is an explicit display instruction. Thus, even when participation requests or the like is accepted from the plural PCs 200 , the overall image can be displayed properly and quickly.
- the projector 100 can accept participation requests or the like from the second and subsequent PCs 200 without changing the existing configuration of the overall image. Also, for example, if the display device does not display individual images based on image information from all the PCs 200 that transmitted participation request information, the first PC 200 always needs to give an explicit display instruction and convenience is impaired. On the other hand, according to the first embodiment, the projector 100 can instantly display individual images based on image information from the first PC 200 that transmitted participation request information and therefore convenience is enhanced.
- a pattern image generating unit allocated as a virtual source is provided within each PC.
- a pattern image generating unit allocated as a virtual source is provided in a projector.
- a projector in the second embodiment can be applied to the display system shown in FIG. 1 .
- the display system is provided with PCs having a configuration without a pattern image generating unit, instead of the PCs 200 - 1 to 200 - 4 .
- FIG. 13 shows a functional block diagram showing an example of the configuration of the projector according to the second embodiment.
- the same parts as in FIG. 2 are denoted by the same reference numerals and the description thereof is omitted where appropriate.
- a projector 100 a includes a display-side communication unit 110 , a display-side information generating unit 120 a , a display-side image generating unit 130 , a display-side storage unit 140 , a display-side update unit 150 , a pattern image generating unit (pattern image source) 170 a , and a projection unit 190 .
- the projector 100 a is different from the projector 100 shown in FIG. 2 in that the pattern image generating unit 170 a is added and that processing by the display-side information generating unit 120 a is different because of the addition of the pattern image generating unit 170 a .
- the pattern image generating unit 170 a generates image information corresponding to a predetermined pattern image.
- the predetermined pattern image may be a total black image, a total white image, user logo image or an image including text information.
- the pattern image generating unit 170 a generates image information using image data 142 .
- the projection unit 190 projects an image generated by the display-side image generating unit 130 or a pattern image generated by the pattern image generating unit 170 a , on a screen SCR.
- each unit forming the projector 100 a may be realized by hardware.
- the functions of the display-side communication unit 110 are realized by a wireless communication unit or the like.
- the functions of the display-side information generating unit 120 a and the display-side update unit 150 are realized by a CPU or the like.
- the functions of the display-side image generating unit 130 and the pattern image generating unit 170 a are realized by an image processing circuit or the like.
- the functions of the display-side storage unit 140 are realized by a RAM or the like.
- the projection unit 190 is realized by a lamp, a liquid crystal panel, a liquid crystal drive circuit, a lens and the like.
- FIG. 14 shows a functional block diagram showing an example of the configuration of the PC in the second embodiment.
- the same parts as in FIG. 3 are denoted by the same reference numerals and the description thereof is omitted where appropriate.
- a PC 200 a includes a terminal-side communication unit 210 , a terminal-side information generating unit 220 a , a terminal-side image generating unit 230 , a terminal-side storage unit 240 , a terminal-side update unit 250 , an input unit 260 , and a terminal-side display unit 290 .
- the terminal-side information generating unit 220 a includes a source setting unit 222 and an output processing unit 224 a .
- the PC 200 a is different from the PC 200 shown in FIG. 3 in that the pattern image generating unit is omitted and that processing by the terminal-side information generating unit 220 a is different because of the omission of the pattern image generating unit.
- the output processing unit 224 a performs output processing of various kinds of information to the projector 100 a .
- the output processing unit 224 a can gives an instruction to display a pattern image to the projector 100 a according to a setting content of the source setting unit 222 .
- the terminal-side display unit 290 displays an image generated by the terminal-side image generating unit 230 .
- each unit forming the PC 200 a may be realized by hardware.
- the functions of the terminal-side communication unit 210 are realized by a wireless communication unit or the like.
- the functions of the terminal-side information generating unit 220 a and the terminal-side update unit 250 are realized by a CPU or the like.
- the functions of the input unit 260 are realized by a USB port or the like connected to a keyboard or mouse.
- the functions of the terminal-side image generating unit 230 are realized by an image processing circuit or the like.
- the functions of the terminal-side storage unit 240 are realized by a RAM or the like.
- the functions of the terminal-side display unit 290 are realized by a backlight, a liquid crystal panel and a liquid crystal drive circuit and the like.
- the computer of the PC 200 a may function as the terminal-side image generating unit 230 or the like by reading a program stored in an information storage medium 280 .
- FIG. 15 shows a flowchart illustrating an example of an image display procedure in the PC 200 a according to the second embodiment.
- the same steps as in FIG. 4 are denoted by the same reference numerals.
- FIG. 16 shows a flowchart illustrating an example of an image display procedure in the projector 100 a according to the second embodiment.
- the same steps as in FIG. 5 are denoted by the same reference numerals.
- FIG. 17 shows a sequence diagram illustrating exchange of information between the PC 200 a and the projector 100 a according to the second embodiment. In FIG. 17 , steps corresponding to FIG. 15 and FIG. 16 are shown as well.
- steps S 1 to S 5 are the same as step S 1 to S 5 shown in FIG. 4 and therefore will not be described further.
- the terminal-side information generating unit 220 a determines whether the configuration after the change includes a virtual source or not (step S 6 a ).
- the terminal-side information generating unit 220 a When an icon of virtual source is included (step S 6 a : Y), the terminal-side information generating unit 220 a generates configuration change request information including a virtual source, reflecting the result of designation by the source setting unit 222 (step S 7 a ).
- the terminal-side information generating unit 220 a When no icon of virtual source is included (step S 6 a : N), the terminal-side information generating unit 220 a generates configuration change request information that does not include any virtual source, reflecting the result of designation by the source setting unit 222 (step S 8 a ).
- the terminal-side communication unit 210 transmits the configuration change request information generated in step S 7 a or step S 8 a to the projector 100 a (step S 9 a ).
- the terminal-side information generating unit 220 a determines whether transmission start request information for image information is received by the terminal-side communication unit 210 from the projector 100 a or not (step S 10 a ).
- the terminal-side image generating unit 230 generates image information representing the graph image or the like shown in FIG. 1 based on the image data 242 .
- the terminal-side communication unit 210 transmits the image information to the projector 100 a (step S 11 a ).
- the terminal-side display unit 290 displays an image corresponding to the image information.
- step S 11 a when the configuration after the change includes a virtual source, the output processing unit 224 a of the terminal-side information generating unit 220 a performs processing to generate and designate display of a pattern image to the projector 100 a . That is, when a change request in which an icon corresponding to a pattern image source is designated in relation to the position designation area is admitted on the basis of a response from the projector 100 a , the output processing unit 224 a performs processing to output an instruction to display the predetermined pattern image to the projector 100 a.
- step S 11 a or when transmission start request information is not received (step S 10 a : N), the terminal-side information generating unit 220 a determines whether transmission stop request information for image information is received by the terminal-side communication unit 210 from the projector 100 a or not (step S 12 a ).
- step S 12 a When transmission stop request information is received (step S 12 a : Y), the terminal-side image generating unit 230 stops generating image information and the terminal-side communication unit 210 stops transmitting image information (step S 13 a ).
- the participant can disconnect the communication of the participant's own PC 200 a by selecting “Leave” from a sub-menu of “Tool” in the configuration designation image 500 . Moreover, the participant can disconnect the communication of all the PCs 200 a by selecting “End Meeting” from the sub-menu.
- the terminal-side information generating unit 220 a determines whether “End Meeting” is selected or not, based on operation information from the input unit 260 (step S 14 a ). When “End Meeting” is selected (step S 14 a : Y), the terminal-side information generating unit 220 a generates end request information.
- the terminal-side communication unit 210 transmits the end request information to the projector 100 a (step S 15 a ).
- step S 14 a When “End Meeting” is not selected (step S 14 a : N), the terminal-side information generating unit 220 a determines whether end notification information transmitted from the projector 100 a in response to the reception of end request information is received by the terminal-side communication unit 210 or not (step S 16 a ). Following step S 15 a , or when end notification information is received (step S 16 a : Y), the PC 200 a ends the series of processing (END). When end notification information is not received in step S 16 a (step S 16 a : N), the PC 200 a returns to step S 3 and repeats execution of the processing of steps S 3 to S 16 a.
- Steps p 1 to P 6 in FIG. 16 are the same as steps P 1 to P 6 in FIG. 4 and therefore will not be described further.
- step P 6 the display-side information generating unit 120 a determines whether the image configuration information includes a virtual source or not (step P 7 a ).
- step P 7 a the display-side update unit 150 updates the image configuration data 144 and performs processing to add a pattern image of the virtual source to the overall image (step P 8 a ).
- the display-side update unit 150 determines whether image information is received by the display-side communication unit 110 from the PC 200 a or not (step P 9 a ).
- the display-side update unit 150 updates the image data 142 based on the image information.
- the display-side image generating unit 130 generates image information based on the image data 142 and the image configuration data 144 .
- the pattern image generating unit 170 a generates image information corresponding to the pattern image.
- the projection unit 190 projects the overall image 20 generated on the basis of the image information generated by the display-side generating unit 130 or the pattern image generating unit 170 a , on the screen SCR (step P 10 a ). Meanwhile, the display-side image generating unit 130 may also have the functions of the pattern image generating unit 170 a . Moreover, the display-side image generating unit 130 may generate the overall image 20 .
- step P 10 a the display-side information generating unit 120 a determines whether end request information is received by the display-side communication unit 110 from the PC 200 a or not (step P 11 a ).
- step P 11 a the display-side information generating unit 120 a generates end notification information.
- the display-side communication unit 110 transmits the end notification information to each PC 200 a .
- the display-side update unit 150 updates the device management data 146 and the image configuration data 144 , for example, to initial states or the like (step P 12 a ).
- step P 12 a determines whether a projection end instruction is given or not (step P 13 a ).
- step P 13 a determines whether a projection end instruction is given or not (step P 13 a ).
- step P 13 a Y
- the projector 100 a ends the foregoing series of processing (END).
- step P 13 a : N the projector 100 a returns to step P 1 and the display-side information generating unit 120 a determines whether state confirmation information is received by the display-side communication unit 110 from the PC 200 a or not.
- the pattern image generating unit 170 a provided in the projector 100 a when image configuration information including a virtual source from the PC 200 a is received by the projector 100 a , the pattern image generating unit 170 a provided in the projector 100 a generates a pattern image.
- the pattern image generating unit provided in the projector 100 a is allocated virtually as an image source, a predetermined pattern image can be displayed in the overall image by an intuitive operation similar to handling of other image sources, as in the first embodiment.
- FIG. 1 An example of a display system including four PCs is described, as shown in FIG. 1 .
- a display system according to the invention may include three or less PCs, or five or more PCs.
- FIG. 18 shows an example of a configuration designation image according to a modification of the first embodiment or the second embodiment.
- the same parts as in FIG. 7 are denoted by the same reference numerals and the description thereof is omitted where appropriate.
- the terminal-side image generating unit 230 when the number of PCs 200 participating in the meeting is increased and the icons thereof cannot be displayed on the icon arrangement area 540 , the terminal-side image generating unit 230 generates a configuration designation image 501 in which a scroll bar image 592 is added to the icon arrangement area 540 .
- the participant can scroll the scroll bar image 592 and thereby can display the icon images of PCs 200 that cannot be displayed before scrolling.
- the display system is described as including one projector.
- the invention is not limited to this.
- the display system according to the invention may include two or more projectors.
- one projector serves as a master and can control the other projector to project the same screen.
- connection form between the projector and the PC is described as wireless connection.
- the invention is not limited to this.
- the projector and the PC may be connected by wired connection via a LAN cable or the like.
- a projector is used as an example of the display device according to the invention.
- the invention is not limited to this.
- a liquid crystal display, CRT (cathode ray tube), organic EL (electroluminescence) display, an electronic device having a projection function (for example, a digital camera or mobile phone) or the like may be used as well as a projector.
- a PC is used as an example of the terminal device according to the invention.
- the invention is not limited to this.
- a mobile phone, personal digital assistant or the like may be used as well as a PC.
- the computer provided in the projector according to one of the embodiments or the modification thereof may read a program stored in an information storage medium and thus function as the display-side image generating unit 130 or the like.
- an information storage medium for example, a CD-ROM, DVD-ROM, ROM, RAM, HDD or the like may be applied.
- the projector according to one of the embodiments or the modification thereof is not limited to a liquid crystal projector (transmitting type, reflecting type) and may be, for example, a projector using a digital micromirror device or the like.
- the projection unit 190 may employ a self-luminous device including a solid-state light source such as an organic EL element, silicon light-emitting element, laser diode or LED (light emitting diode) instead of a lamp.
- the functions of the projector may be split to plural devices (for example, a PC and a projector or the like).
- the invention is described as a program, information storage medium, terminal device, and display device or the like.
- the invention is not limited to these.
- the invention may include an image generating method for the PC according to one of the embodiments or the modification thereof, an image display method for the projector, a program that realizes the image display method, and a computer-readable information storage medium in which the program is stored, or the like.
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Abstract
Description
- The entire disclosure of Japanese Patent Application No. 2011-060493 filed Mar. 18, 2011 is expressly incorporated by reference herein.
- 1. Technical Field
- The present invention relates to an information storage medium, a terminal device, a display system, and a method for controlling a terminal device or the like.
- 2. Related Art
- According to the related art, while an image is displayed on a display device such as a projector, temporary switching to a specific image is desired in some cases. Such an image may be an image showing that an image muting period is now proceeding, a user logo image registered in advance by a user, and the like. For example, JP-A-2003-280087 discloses a technique of displaying, by a projector provided with an image muting function, a total black image that shows the entire screen in black or a user logo image during an image muting period. Also, Seiko Epson Corporation's product manual download (online), Liquid Crystal Projector EB-1775W User's Manual, (searched on Mar. 1, 2011), URL: http://dl.epson.jp/support/manual/data/elp/eb1775w/U_GUIDE—1775W.PDF discloses a menu screen where an image to be projected by a projector during an image muting period is selected from among a black image, a blue image, and a user logo image.
- However, in the techniques of JP-A-2003-280087 and Seiko Epson Corporation's Liquid Crystal Projector EB-1775W User's Manual, a specific operation such as pressing an operation button allocated specifically for the image muting function needs to be conducted in order to call the image muting function. Therefore, in many cases, the image muting function cannot be called immediately. Thus, there is a problem that images cannot be switched immediately because the specific operation is needed even when switching to a specific image is desired such as in the image muting function.
- An advantage of some aspects of the invention is to provide a program, an information storage medium, a terminal device and a display system or the like with which switching to a predetermined pattern image such as total black image is realized by easy operations.
- An aspect of the invention is directed to an information storage medium readable by a computer provided in a terminal device which establishes connection with a display device and sets a source of an image to be displayed on the display device, storing a program that causes the computer to function as: an input unit to which operation information is inputted; an image generating unit which generates a configuration designation image including a position designation area corresponding to a display area of the display device and an icon arrangement area where an icon corresponding to an image that can be designated in relation to the position designation area is arranged; and a setting unit which designates an icon to be arranged in the icon arrangement area in relation to the position designation area on the basis of the operation information and thereby sets an image corresponding to the icon as a display image in the display area. The icon includes a first icon corresponding to an image supplied from the terminal device connected with the display device and a second icon corresponding to a predetermined pattern image.
- According to this aspect, an image source and an icon of a pattern image source that is allocated virtually as an image source are arranged in the configuration designation image, and an icon can be designated in relation to the position designation area on the basis of user's operation information. Thus, an image showing a predetermined pattern image can be displayed by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may be configured such that the configuration of an overall image of the predetermined pattern image is changed by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may be configured such that the overall image including images from plural terminal devices is displayed correctly.
- This aspect of the invention may be configured such that an arbitrary pattern image is generated on the terminal device side and can be displayed by the display device, without applying any load of generating the pattern image to the display device side.
- This aspect of the invention may be configured such that an arbitrary pattern image can be generated and displayed on the display device side, without applying any load of generating the pattern image to the terminal device side.
- This aspect of the invention may be configured such that part or the whole of an image displayed by the display device is temporarily muted by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may be configured such that part or the whole of a display area of the display device is temporarily brightened by an intuitive operation similar to handling of other image sources. Thus, meetings and presentations can be enriched further.
- This aspect of the invention may be configured such that an image showing a message to other participants attending a meeting, for example, is displayed by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may be configured such that a preferred image such as a wallpaper is displayed by an intuitive operation similar to handling of other image sources.
- Another aspect of the invention is directed to a terminal device that is connected with a display device and sets an image to be displayed on the display device, including: an input unit to which operation information is inputted; an image generating unit which generates a configuration designation image including a position designation area corresponding to a display area of the display device and an icon arrangement area where an icon corresponding to an image that can be designated in relation to the position designation area is arranged; and a setting unit which designates an icon to be arranged in the icon arrangement area in relation to the position designation area on the basis of the operation information and thereby sets an image corresponding to the icon as a display image in the display area. The icon includes a first icon corresponding to an image supplied from the terminal device connected with the display device and a second icon corresponding to a predetermined pattern image.
- According to this aspect, an image source and an icon of a pattern image source that is allocated virtually as an image source are arranged in the configuration designation image, and an icon can be designated in relation to the position designation area on the basis of user's operation information. Thus, an image showing a predetermined pattern image can be displayed by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may provide a display system which displays an image showing a predetermined pattern image by an intuitive operation similar to handling of other image sources.
- This aspect of the invention may provide a display system which displays an image showing a predetermined pattern image by an intuitive operation similar to handling of other image sources without applying any load to the display device side.
- This aspect of the invention may provide a display system which displays an image showing a predetermined pattern image by an intuitive operation similar to handling of other image sources without applying any load to the terminal device side.
- The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements.
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FIG. 1 shows an example of the configuration of a display system according to a first embodiment. -
FIG. 2 is a functional block diagram showing an example of the configuration of a projector shown inFIG. 1 . -
FIG. 3 is a functional block diagram showing an example of the configuration of a PC shown inFIG. 1 . -
FIG. 4 is a flowchart showing an example of an image display procedure in the PC according to the first embodiment. -
FIG. 5 is a flowchart showing an example of an image display procedure in the projector according to the first embodiment. -
FIG. 6 is a sequence diagram showing exchange of information between the PC and the projector according to the first embodiment. -
FIG. 7 shows an example of a configuration designation image according to the first embodiment. -
FIG. 8 is an explanatory view showing a drag-and-drop operation by a participant according to the first embodiment. -
FIG. 9 shows an example of image transition on each PC and the projector according to the first embodiment. -
FIG. 10 shows another example of image transition on each PC and the projector according to the first embodiment. -
FIG. 11 schematically shows an example of an overall image in a case where an icon showing a user logo image is designated as a virtual source. -
FIG. 12 schematically shows an example of an overall image in a case where an icon showing text information is designated as a virtual source. -
FIG. 13 is a functional block diagram showing an example of the configuration of a projector according to a second embodiment. -
FIG. 14 is a functional block diagram showing an example of the configuration of a PC according to the second embodiment. -
FIG. 15 is a flowchart showing an example of an image display procedure in the PC according to the second embodiment. -
FIG. 16 is a flowchart showing an example of an image display procedure in the projector according to the second embodiment. -
FIG. 17 is a sequence diagram showing exchange of information between the PC and the projector according to the second embodiment. -
FIG. 18 shows an example of a configuration designation image according to a modification of the first embodiment and the second embodiment. - Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. It should be noted that the following embodiments are not intended to improperly limit the contents of the invention described in the appended claims. Not all the components of the configurations described hereinafter are necessarily essential components for solving the problems to be solved by the invention.
- In the following embodiments, a projector is used as an example of the display device according to the invention, and a personal computer (hereinafter PC) is used as an example of the terminal device according to the invention. However, the invention is not limited to these examples.
-
FIG. 1 shows an example of a configuration of a display system according to a first embodiment of the invention. - This
display system 10 includes a projector (in a broad sense, a display device) 100, and PCs (in a broad sense, terminal devices) 200-1 to 200-4. InFIG. 1 , theprojector 100 and the PCs 200-1 to 200-4 are wirelessly connected via anaccess point 300. Theprojector 100 can projects, on a screen SCR, anoverall image 20 including up to fourindividual images 30 to 33 based on image information from the PCs 200-1 to 200-4. For example, each of four participants (users) who attend a meeting can change the configuration of theindividual images 20 to 33 in theoverall image 20 by operating an icon or the like of a configuration designation image displayed on the PC allocated to each participant. InFIG. 1 , an image displayed on the screen of each participant's PC is displayed in a corresponding area in theoverall image 20. Hereinafter, the PCs 200-1 to 200-4 are assumed to have the same configuration and each of the PCs is referred to asPC 200 when appropriate. -
FIG. 2 shows a functional block diagram showing an example of the configuration of theprojector 100 shown inFIG. 1 . - The
projector 100 includes a display-side communication unit (receiving unit) 110, a display-sideinformation generating unit 120, a display-sideimage generating unit 130, a display-side storage unit 140, a display-side update unit 150, and a projection unit (display-side display unit) 190. The display-side storage unit 140 stores imagedata 142,image configuration data 144, anddevice management data 146 or the like. Theimage data 142 includes image information or the like from the PCs 200-1 to 200-4. Theimage configuration data 144 represents the configuration of theoverall image 20 and the configuration designation image. Thedevice management data 146 represents a communication target device. - The display-
side communication unit 110 communicates with the PCs 200-1 to 200-4 via theaccess point 300 and also functions, for example, as a receiving unit which receives image information or the like from each PC. The display-sideinformation generating unit 120 generates various kinds of information to be transmitted to the PCs 200-1 to 200-4. The display-sideimage generating unit 130 generates image information corresponding to an image to be displayed on theprojection unit 190. At this time, the display-sideimage generating unit 130 generates the image information using theimage data 142. The display-side update unit 150 performs processing to update the data in the display-side storage unit 140. Theprojection unit 190 projects the image generated by the display-sideimage generating unit 130 on the screen SCR. - The functions of each unit forming the
projector 100 may be realized by hardware. For example, the functions of the display-side communication unit 110 are realized by a wireless communication unit or the like. The functions of the display-sideinformation generating unit 120 and the display-side update unit 150 are realized by a central processing unit (hereinafter CPU) or the like. The functions of the display-sideimage generating unit 130 are realized by an image processing circuit or the like. The functions of the display-side storage unit 140 are realized by a random access memory (hereinafter RAM) or the like. Theprojection unit 190 is realized by a lamp, a liquid crystal panel, a liquid crystal drive circuit, a lens and the like. -
FIG. 3 shows a functional block diagram showing an example of the configuration of thePC 200 shown inFIG. 1 . - The
PC 200 includes a terminal-side communication unit (transmitting unit) 210, a terminal-sideinformation generating unit 220, a terminal-sideimage generating unit 230, a terminal-side storage unit 240, a terminal-side update unit 250, aninput unit 260, a pattern image generating unit (pattern image source) 270, and a terminal-side display unit 290. The terminal-sideinformation generating unit 220 includes a source setting unit (setting unit) 222 and anoutput processing unit 224. The terminal-side storage unit 240 stores imagedata 242,image configuration data 244, anddevice management data 246 or the like. Theimage data 242 is image information and the like. Theimage configuration data 244 represents the configuration of theoverall image 20 and the configuration designation image. Thedevice management data 246 represents a communication target device. - The terminal-
side communication unit 210 communicates with theprojector 100 via theaccess point 300 and also functions, for example, as a transmitting unit which transmits image information or the like to theprojector 100. The terminal-sideinformation generating unit 220 generates various kinds of information to be transmitted to theprojector 100. Thesource setting unit 222 performs setting processing of a source of an image that forms theoverall image 20. Theoutput processing unit 224 performs output processing of various kinds of information to theprojector 100. The terminal-sideimage generating unit 230 generates image information corresponding to an image to be displayed on the screen of each participant's PC. For example, the terminal-sideimage generating unit 230 generates the image information using theimage data 242. The terminal-side update unit 250 performs processing to update the data in the terminal-side storage unit 240. To theinput unit 260, operation information is inputted by the participant. The patternimage generating unit 270 generates image information corresponding to a predetermined pattern image. The predetermined pattern image may be a total black image, total white image, user logo image, or an image showing text information (text image) or the like. For example, the patternimage generating unit 270 generates the image information using theimage data 242. The terminal-side display unit 290 displays the image generated by the terminal-sideimage generating unit 230 or the pattern image generated by the patternimage generating unit 270. The functions of the patternimage generating unit 270 may be provided in the terminal-sideimage generating unit 230. - The functions of each unit forming the
PC 200 may be realized by hardware. For example, the functions of the terminal-side communication unit 210 are realized by a wireless communication unit or the like. The functions of the terminal-sideinformation generating unit 220 and the terminal-side update unit 250 are realized by a CPU or the like. The functions of theinput unit 260 are realized by a USB (universal serial bus) port or the like connected to a keyboard or mouse. The functions of the terminal-sideimage generating unit 230 and the patternimage generating unit 270 are realized by an image processing circuit or the like. The functions of the terminal-side storage unit 240 are realized by a RAM or the like. The functions of the terminal-side display unit 290 are realized by a backlight, a liquid crystal panel and a liquid crystal drive circuit and the like. - The computer of the
PC 200 may function as the terminal-sideimage generating unit 230 or the like by reading a program stored in aninformation storage medium 280. Such aninformation storage medium 280 may be, for example, a CD-ROM (compact disk read only memory), DVD-ROM (digital versatile disk read only memory), ROM (read only memory), RAM, HDD (hard disk drive) or the like. - Next, a procedure for projecting the
overall image 20 in response to a configuration change request for an image in thedisplay system 10 will be described. ThePC 200 displays a configuration designation image and participants of a meeting carries out an operation while viewing the configuration designation image. Thus, a configuration change request for the overall image is made to theprojector 100. -
FIG. 4 shows a flowchart illustrating an example of an image display procedure in thePC 200 according to the first embodiment. -
FIG. 5 shows a flowchart illustrating an example of an image display procedure in theprojector 100 according to the first embodiment. -
FIG. 6 shows a sequence diagram illustrating exchange of information between thePC 200 and theprojector 100 according to the first embodiment. InFIG. 6 , steps corresponding toFIG. 4 andFIG. 5 are shown as well. - First, the image display procedure in the
PC 200 will be described with reference toFIG. 4 . - The participant of the meeting operates the keyboard, mouse or the like of the participant's
PC 200 and thereby gives an instruction to execute a projector search program in order to connect thisPC 200 to theprojector 100. The projector search program is assumed to be installed in thePC 200 in advance. The terminals-sideinformation generating unit 220 generates state confirmation information to confirm the connection state or the like of each device in the network, based on the information indicating the execution instruction from theinput unit 260. The terminal-side communication unit 210 transmits the state confirmation information to theprojector 100 and receives state notification information indicating the connection state or the like of each device from theprojector 100. The terminal-side update unit 250 updates thedevice management data 246 based on the state notification information. The terminal-sideimage generating unit 230 generates a search image showing the result of search for theprojector 100 based on theimage data 242 and thedevice management data 246. The terminal-side display unit 290 displays the search image (step S1). - In the search image, the state, projector name, IP (internet protocol) address and the like of the
projector 100, and a participation button image or the like for the participant to attend the meeting (for connecting thePC 200 to the projector 100) are shown. The participant uses the mouse or the like of thePC 200 to click the participation button image in the search image and thereby gives an instruction to participate in the meeting. The terminal-sideinformation generating unit 220 generates participation request information based on the information indicating the participation instruction from theinput unit 260. The terminal-side communication unit 210 transmits the participation request information to theprojector 100 and receives state notification information from theprojector 100. The terminal-side update unit 250 updates thedevice management data 246 based on the state notification information (step S2). - The terminal-
side update unit 250 determines whether image configuration information indicating a configuration of a configuration designation image is received by the terminal-side communication unit 210 from theprojector 100 or not (step S3). When image configuration information is received (step S3: Y), the terminal-side update unit 250 updates theimage configuration data 244 based on the image configuration information. The terminal-sideimage generating unit 230 generates a configuration designation image based on theimage configuration data 244, and the terminal-side display unit 290 displays the configuration designation image (step S4). - Now, the configuration designation image in the first embodiment will be described.
-
FIG. 7 shows an example of the configuration designation image in the first embodiment. This configuration designation image is an image displayed on each of the screens of the PCs 200-1 to 200-4 ofFIG. 1 . InFIG. 7 , the computer name of the PC 200-1 is “CPA”, the computer name of the PC 200-2 is “CPB”, the computer name of the PC 200-3 is “CPC”, and the computer name of the PC 200-4 is “CPD”.FIG. 7 shows an example of an image displayed on the screen of the PC 200-1 ofFIG. 1 . - A
configuration designation image 500 includes a displaymode selection area 510, asource selection area 530, and anicon arrangement area 540. In the displaymode selection area 510, displaymode button images overall image 20 are arranged. The displaymode button image 512 is a button image for displaying one image in full screen without dividing the display area of theoverall image 20. The display mode button image 514 is a button image for simultaneously displaying up to two images by dividing theoverall image 20. The displaymode button image 516 is a button image for simultaneously displaying up to four images by dividing theoverall image 20. - In the
source selection area 530, a position designation area corresponding to a projection area of the projector 100 (display area of the display device) is provided. Specifically, in thesource selection area 530, one or plural position designation areas corresponding to one or plural division display areas formed by dividing theoverall image 20 are provided. InFIG. 7 , fourposition designation areas 531 to 534 in two rows by two columns are provided corresponding to theindividual images 30 to 33 forming theoverall image 20. Also, in thesource selection area 530, arectangular cursor image 590 or the like is arranged which shifts among theposition designation areas 531 to 534 according to the participant's operation and allows the participant to select an individual image to be displayed. - In the
icon arrangement area 540, adisplay button image 520, apause button image 524, andicons display button image 520 is a button image for giving an instruction to display theoverall image 20. Thepause button image 524 is a button image for giving an instruction to maintain the display of the currentoverall image 20. Theicons projector 100, respectively, as image sources (video sources). Theicons projector 100. - The
icon 558 is an icon that represents a pattern image source (pattern vide source) showing a total black image. That is, theicon 558 virtually allocates the patternimage generating unit 270 generating image information corresponding to a total black image held by thePC 200, as an image source, and indicates the patternimage generating unit 270 as a virtual source for selecting a source by a similar operation to operations with respect to image sources. Theicon 560 is an icon that represents a pattern image source showing a total white image. That is, theicon 560 virtually allocates the patternimage generating unit 270 generating image information corresponding to a total white image held by thePC 200, as an image source, and indicates the patternimage generating unit 270 as a virtual source. Theicons icon arrangement area 540 ofFIG. 7 , an icon that represents a pattern image source showing a user logo image, and an icon that represents a pattern image source showing text information that is registered in advance may be arranged as second icons, in place of or in addition to theicons configuration designation image 500 includes menu images representing “File”, “Tool”, and “Help”, an image showing a connected projector name, and so on.FIG. 7 shows that the projector name of theprojector 100 is “EMP00000000”. -
FIG. 7 shows that, in thesource selection area 530, amark image 570 indicating “CPA” is arranged in the top leftposition designation area 531 and amark image 572 indicating “CPB” is arranged in the top rightposition designation area 532. Also, in thesource selection area 530, amark image 574 indicating “CPC” is arranged in the bottom leftposition designation area 533 and no mark image is arranged in the bottom rightposition designation area 534. In this case, there are three participants in the meeting. The background of themark images overall image 20. The background of themark images overall image 20. For example, in the example shown inFIG. 7 , the background of themark images overall image 20. - The
icon arrangement area 540 also includes an own-device area 542 and an other-device area 544. In the other-device area 544, theicons other PCs 200 from the left in participation order (in order of connecting to the projector 100), and theicons device area 542, theicon 550 indicating the own device in a fixed manner irrespective of participation order is arranged. The background of theicons source selection area 530. For example, in the example shown inFIG. 7 , for theicons icon 554, which is in a display standby state where the mark image thereof is displayed and the individual image thereof is not displayed, the background is shown in grey. For theicon 556, which is in a non-display state where the mark image thereof is not displayed, nothing is shown as the background. Similarly, for theicons - Each participant operating each
PC 200 can display and operate the search image (not shown) and theconfiguration designation image 500 on the screen of eachPC 200. Each participant changes the image source of an image corresponding to each position designation area in thesource selection area 530, for example, by drag-and-dropping theicons icon arrangement area 540 to thesource selection area 530. That is, each participant can change the configuration of theoverall image 20 by drag-and-dropping the icon of a desired image source to each position designation area in thesource selection area 530. -
FIG. 8 shows an explanatory view illustrating the drag-and-drop operation by the participants according to the first embodiment.FIG. 8 shows theconfiguration designation image 500 similar toFIG. 7 . The same parts as inFIG. 7 are denoted by the same reference numerals and the description thereof will be omitted when appropriate. - For example, each participant lays the mouse pointer over the position of the “CPA”
icon 550 and clicks on this icon, and in this state, each participant moves the mouse pointer to theposition designation area 531 and lifts the finger from the mouse. At this point, while theicon 550 is left in theicon arrangement area 540, an icon in the same form as theicon 550 moves interlocked with the mouse pointer. Thus, themark image 570 corresponding to the PC 200-1 can be arranged in the position designation area 531 (seeFIG. 7 ). Consequently, thesource setting unit 222 performs processing to designate the displaying of an image of an image source or pattern image source corresponding to the icon moved by the drag-and-drop operation, in the display area of theoverall image 20. That is, thesource setting unit 222 designates an icon to be arranged in theicon arrangement area 540 in relation to the position designation area on the basis of operation information, and thereby sets an image source or pattern image source corresponding to the icon, as a source of a display image in the display area of theoverall image 20. When the display area of theoverall image 20 are divided into plural division display areas, thesource setting unit 222 sets an image source or pattern image source corresponding to an icon designated in relation to position designation area on the basis of operation information, as a source of a display image in the division display area corresponding to each position designation area. Thus, theoverall image 20 including the individual image of the PC 200-1 can be projected by theprojector 100. - Back to
FIG. 4 , the description continues. - Following step S4, or when image configuration information is not received in step S3 (step S3: N), the terminal-side
information generating unit 220 determines whether there is a change in the configuration by a configuration designation operation or not, based on the information from the input unit 260 (step S5). When there is a change in the configuration (step S5: Y), the terminal-sideinformation generating unit 220 generates configuration change request information that reflects the result designated by thesource setting unit 222. The terminal-side communication unit 210 transmits the configuration change request information to the projector 100 (step S6). That is, in step S6, thePC 200 sends a change request to theprojector 100 to change the designation of the image source or pattern image source in relation to the position designation area. - Following step S6, or when there is no change in the configuration (step S5: N), the terminal-side
information generating unit 220 determines whether transmission start request information for image information is received by the terminal-side communication unit 210 from theprojector 100 or not (step S7). When transmission start request information is received (step S7: Y), thePC 200 determines that the foregoing change request is admitted, as a response to the change request made in step S6. Then, the terminal-sideinformation generating unit 220 determines whether the configuration change admitted in step S7 includes a virtual source or not (step S8). When the configuration change includes a virtual source (step S8: Y), the patternimage generating unit 270 generates image information of a pattern image corresponding to the virtual source included in the configuration change. Theoutput processing unit 224 performs output processing including an instruction to transmit the image information from the terminal-side communication unit 210. The terminal-side communication unit 210 transmits the image information to theprojector 100 according to the instruction from the output processing unit 224 (step S9). At this point, the terminal-side display unit 290 displays an image corresponding to the image information. In this manner, theoutput processing unit 224 sends a change request to theprojector 100 to change the designation of an image source or pattern image source in relation to the position designation area, and performs processing to output image information to theprojector 100 according to a response to the change request. Here, theoutput processing unit 224 performs processing to output image information corresponding to a predetermined pattern image to theprojector 100 when a change request such that an icon corresponding to a pattern image source is designated in relation to the position designation area is admitted on the basis of a response from theprojector 100. - Here, when the virtual source indicates a source for displaying a total black image, the
output processing unit 224 performs output processing including an instruction to transmit image information corresponding to the total black image from the terminal-side communication unit 210. The total black image may be an image with all the constituent pixels being black, or an image with all the constituent pixels having gradation levels close to black, or an image partly including other pixels than black. Meanwhile, when the virtual source indicates a source for displaying a total white image, theoutput processing unit 224 performs output processing including an instruction to transmit image information corresponding to the total white image from the terminal-side communication unit 210. The total white image may be an image with all the constituent pixels being white, or an image with all the constituent pixels having gradation levels close to white, or an image partly including other pixels than white. Moreover, when the virtual source indicates a source for displaying text information that is registered in advance, theoutput processing unit 224 performs output processing including an instruction to transmit image information corresponding to the text information from the terminal-side communication unit 210. However, when the virtual source indicates a source for displaying a user logo image, theoutput processing unit 224 may instruct theprojector 100 via the terminal-side communication unit 210 to directly project a user logo image that is registered in advance in theprojector 100, without transmitting image information corresponding to the user logo image to theprojector 100. - When the configuration change includes no virtual source in step S8 (step S8: N), the terminal-side
image generating unit 230 generates image information representing a graph image or the like on a desktop shown inFIG. 1 , based on theimage data 242. The terminal-side communication unit 210 transmits the image information to the projector 100 (step S10). At this point, the terminal-side display unit 290 displays an image corresponding to the image information. The terminal-sideimage generating unit 230 generates the graph image or the like shown inFIG. 1 , continuously captures the graph image or the like, and stores the graph image or the like in the terminal-side storage unit 240 as theimage data 242. The patternimage generating unit 270 may also continuously capture a pattern image and store the pattern image in the terminal-side storage unit 240 as pattern image data, similarly to the terminal-sideimage generating unit 230. - Following step S9 or step S10, or when transmission start request information is not received (step S7: N), the terminal-side
information generating unit 220 determines whether transmission stop request information for image information is received by the terminal-side communication unit 210 from theprojector 100 or not (step S11). When transmission stop request information is received (step S11: Y), the terminal-sideimage generating unit 230 or the patternimage generating unit 270 stops generating image information and the terminal-side communication unit 210 stops transmitting image information (step S12). In this case, the terminal-sideimage generating unit 230 or the patternimage generating unit 270 may stop capturing images. - The participant can disconnect the communication of the participant's
own PC 200 by selecting “Leave” from a sub-menu of “Tool” in theconfiguration designation image 500. Moreover, the participant can disconnect the communication of all thePCs 200 by selecting “End Meeting” from the sub-menu. Following step S12, or when transmission stop request information is not received (step S11: N), the terminal-sideinformation generating unit 220 determines whether “End Meeting” is selected or not, based on operation information from the input unit 260 (step S13). When “End Meeting” is selected (step S13: Y), the terminal-sideinformation generating unit 220 generates end request information. The terminal-side communication unit 210 transmits the end request information to the projector 100 (step S14). - When “End Meeting” is not selected (step S13: N), the terminal-side
information generating unit 220 determines whether end notification information transmitted from theprojector 100 in response to the reception of end request information is received by the terminal-side communication unit 210 or not (step S15). Following step S14, or when end notification information is received (step S15: Y), thePC 200 ends the series of processing (END). When end notification information is not received in step S15 (step S15: N), thePC 200 returns to step S3 and repeats execution of the processing of steps S3 to S15. - Meanwhile, when “End Meeting” is selected in step S13, the terminal-side
information generating unit 220 may generates a confirmation image showing character strings such as “All the users attending the meeting will be disconnected from the projector and the search screen will be back. Do you want to end the meeting?” Also, when end notification information is received in step S15, the terminal-sideinformation generating unit 220 may generate a notification image showing character strings such as “Other users have ended the meeting. The search screen will be back.” - Next, the image display procedure in the
projector 100 will be described with reference toFIG. 5 . - The display-side
information generating unit 120 determines whether state confirmation information is received by the display-side communication unit 110 from thePC 200 or not (step P1). When state confirmation information is received (step P1: Y), the display-sideinformation generating unit 120 generates state notification information based on thedevice management data 146. The display-side communication unit 110 transmits the state notification information to thePC 200 of the transmission source (step P2). - Following step P2, or when state confirmation information is not received (step P1: N), the display-
side update unit 150 determines whether participation request information is received by the display-side communication unit 110 from thePC 200 or not (step P3). When participation request information is received (step P3: Y), the display-side update unit 150 updates thedevice management data 146 based on the participation request information. The display-sideinformation generating unit 120 generates state notification information based on thedevice management data 146 and generates image configuration information based on theimage configuration data 144 according to the circumstances. The display-side communication unit 110 transmits the state notification information and the image configuration information to each of the currently participating PCs 200 (step P4). - Following step P4, or when participation request information is not received (step P3: N), the display-
side update unit 150 determines whether configuration change request information is received by the display-side communication unit 110 from thePC 200 or not (step P5). When configuration change request information is received (step P5: Y), the display-side update unit 150 updates theimage configuration data 144 based on the configuration change request information. Also, in this case, the display-sideinformation generating unit 120 generates image configuration information based on theimage configuration data 144 and generates transmission start request information and transmission stop request information according to the circumstances. More specifically, for example, when a new individual image needs to be displayed, the display-sideinformation generating unit 120 generates transmission start request information to thePC 200 that is the transmission source of image information of the individual image. When an individual image no longer needs to be displayed, the display-sideinformation generating unit 120 generates transmission stop request information to thePC 200 that is the transmission source of image information of the individual image. The display-side communication unit 110 transmits the image configuration information, the transmission start request information and the transmission stop request information to each of the currently participatingPCs 200. The display-sideimage generating unit 130 generates anoverall image 20 according to the configuration of the image, based on theimage data 142 and theimage configuration data 144, and theprojection unit 190 projects the overall image 20 (step P6). - Following step P6, or when configuration change request information is not received in step P5 (step P5: N), the display-
side update unit 150 determines whether image information is received by the display-side communication unit 110 from thePC 200 or not (step P7). When image information is received (step P7: Y), the display-side update unit 150 updates theimage data 142 based on the image information. Also, in this case, the display-sideimage generating unit 130 generates anoverall image 20 based on theimage data 142 and theimage configuration data 144, and theprojection unit 190 projects the overall image 20 (step P8). Meanwhile, when an instruction to display a user logo image is given from thePC 200 in step P8, theprojection unit 190 projects anoverall image 20 including a user log image generated by the display-sideimage generating unit 130. - Following step P8, or when image information is not received in step P7 (step P7: N), the display-side
information generating unit 120 determines whether end request information is received by the display-side communication unit 110 from thePC 200 or not (step P9). When end request information is received (step P9: Y), the display-sideinformation generating unit 120 generates end notification information. The display-side communication unit 110 transmits the end notification information to eachPC 200. As the meeting ends, the display-side update unit 150 updates thedevice management data 146 and theimage configuration data 144, for example, to initial states or the like (step P10). - Following step P10, or when end request information is not received in step P9 (step P9: N), the
projector 100 determines whether a projection end instruction is given or not (step P11). When a projection end instruction is given (step P11: Y), theprojector 100 ends the foregoing series of processing (END). When a projection end instruction is not given (step P11: N), theprojector 100 returns to step P1 and the display-sideinformation generating unit 120 determines whether state confirmation information is received by the display-side communication unit 110 from thePC 200 or not. - Next, image transition on the
projector 100 and the PCs 200-1 to 200-4 will be described further in detail. -
FIG. 9 shows an example of image transition on each PC and the projector in the first embodiment.FIG. 9 schematically shows configuration designation images displayed on the screen of each PC andoverall images 20 projected by theprojector 100 at consecutive time points t1 to t4. InFIG. 9 , to simplify the explanation, the PC 200-1 (“CPA”) displays an image A, the PC 200-2 (“CPB”) displays an image B, the PC 200-3 (“CPC”) displays an image C, and the PC 200-4 (“CPD”) displays an image D in the respective division display areas formed by dividing the display area of theoverall image 20. -
FIG. 10 shows another example of image transition on each PC and the projector in the first embodiment.FIG. 10 schematically shows configuration designation images displayed on the screen of each PC andoverall images 20 projected by theprojector 100 at consecutive time points t5 to t8 after time point t4. InFIG. 10 , the PCs 200-1 to 200-4 display images A to D, respectively, as inFIG. 9 . - At time point t1 shown in
FIG. 9 , there is noPC 200 participating in the meeting and theprojector 100 projects a single-color image. If “CPA” participates in the first meeting at time point t2 after time point t1, theprojector 100 projects anoverall image 20 including the image A of “CPA” according to this participation. In this case, the background of the top leftposition designation area 531 in thesource selection area 530 on eachPC 200 changes from grey to white. - After that, “CPB” participates. At this point, the
projector 100 does not automatically project the image B and continues projecting theoverall image 20 including the image A of “CPA”. That is, theprojector 100 automatically projects the image of the first participatingPC 200, irrespective of whether there is an explicit display instruction or not, but does not project the images of the second and subsequent participatingPCs 200 unless there is an explicit display instruction. - At time point t3, the participant who operates “CPA” drag-and-drops the icon of “CPB” to the top right area of the
source selection area 530 in theconfiguration designation image 500 displayed on the PC 200-1. At this point, since the display mode is still of one screen, theoverall image 20 projected by theprojector 100 does not change, but a mark image corresponding to that icon is added to thesource selection area 530. Then, the participant who operates “CPA” clicks on the two-screen displaymode button image 512 in theconfiguration designation image 500 displayed on the PC 200-1. Consequently, theprojector 100 projects anoverall image 20 including the image A and the image B corresponding to the mark images located at the row position where thecursor image 590 exists. In this case, the background of the top rightposition designation area 532 in thesource selection area 530 on eachPC 200 changes from grey to white. - After that, “CPC” and “CPD” similarly participate and the participant who operates “CPA” drag-and-drops the icons of CPC and CPD to the bottom left area and the bottom right area of the
source selection area 530 in theconfiguration designation image 500 displayed on the PC 200-1. If, at point t4, the participant who operates “CPA” clicks on the four-screen display mode button image 514 in theconfiguration designation image 500 displayed on the PC 200-1, theprojector 100 projects anoverall image 20 including the image A, the image B, the image C and the image D corresponding to the respective mark images provided in thesource selection area 530. In this case, the background of the bottom leftposition designation area 533 and the bottom rightposition designation area 534 in thesource selection area 530 on eachPC 200 changes from grey to white. - At time point t5 shown in
FIG. 10 , the participant who operates “CPA” drag-and-drops the icon showing a total black image to the top left area of the source selection area in theconfiguration designation image 500 displayed on the PC 200-1. At this point, theprojector 100 projects anoverall image 20 including a total black image, the image B, the image C and the image D, as designated in thesource selection area 530. Thus, the image A of “CPA” can be temporarily muted by an intuitive operation similar to handling of other image sources. - At time point t6, the participant who operates “CPA” drag-and-drops the icon of virtual source showing a total black image to the bottom right area of the source selection area in the
configuration designation image 500 displayed on the PC 200-1. At this point, theprojector 100 projects anoverall image 20 including a total black image, the image B, the image C, as designated in thesource selection area 530. Thus, the image D of “CPD” can be temporarily muted by an intuitive operation similar to handling of other image sources. - At time point t7, the participant who operates “CPA” drag-and-drops the icon of virtual source showing a total black image to the top right area and the bottom left area of the source selection area in the
configuration designation image 500 displayed on the PC 200-1. At this point, theprojector 100 projects anoverall image 20 that is entirely black, as designated in thesource selection area 530. Thus, theoverall image 20 can be temporarily muted by an intuitive operation similar to handling of other image sources. - After that, at time point t8, the participant who operates “CPA” drag-and-drops the icon of virtual source showing a total white image to the top right area and the bottom right area of the source selection area in the
configuration designation image 500 displayed on the PC 200-1. At this point, theprojector 100 projects anoverall image 20 with a black left half and a white right half, as designated in thesource selection area 530. Thus, theoverall image 20 including a total white image can be projected by an intuitive operation similar to handling of other image sources. In this case, the display area of the total white image is brightened. Therefore, for example, when a white board is used as a projection surface, what is written on the white board can become more visible and meetings and presentations can be enriched further. Meanwhile, if the icon of virtual source showing a total white image is drag-and-dropped to the four position designation areas, theprojector 100 can project, for example, anoverall image 20 that is entirely white. - Although
FIG. 10 illustrates an example where a total black image or a total white image is shown as a virtual source, an image including a user logo image or text information as a virtual source may also be displayed. -
FIG. 11 schematically shows an example of theoverall image 20 projected by theprojector 100 in the case where an icon showing a user logo image as a virtual source is designated. InFIG. 11 , images corresponding to each PC are shown, as inFIG. 9 orFIG. 10 . - For example, it is assumed that, at time point t5 shown in
FIG. 10 , the participant who operates “CPA” drag-and-drops the icon showing a user logo image to the top left area of the source selection area in theconfiguration designation image 500 displayed on the PC 200-1. At this point, theprojector 100 projects anoverall image 20 including a user logo image that is registered in advance, the image B, the image C and the image D, as designated in thesource selection area 530. Thus, a preferred image such as a wallpaper can be displayed by an intuitive operation similar to handling of other image sources. -
FIG. 12 schematically shows an example of theoverall image 20 projected by theprojector 100 in the case where an icon showing text information as a virtual source is designated. InFIG. 12 , images corresponding to each PC are shown, as inFIG. 9 orFIG. 10 . - For example, it is assumed that, at time point t5 shown in
FIG. 10 , the participant who operates “CPA” drag-and-drops the icon showing a user logo image to the bottom right area of the source selection area in theconfiguration designation image 500 displayed on the PC 200-1. At this point, theprojector 100 projects anoverall image 20 including the image A, the image B, the image C and text information that is registered in advance, as designated in thesource selection area 530. InFIG. 12 , information showing “Away” is registered in advance as text information. Thus, an image showing a message or the like to other participants attending the meeting can be displayed by an intuitive operation similar to handling of other image sources. - As described above, according to the first embodiment, the
PC 200 can generate and display theconfiguration designation image 500 including thesource selection area 530 for designating the configuration of theindividual images 30 to 33 in theoverall image 20 displayed by theprojector 100. Thus, the configuration of theoverall image 20 can be presented in a way that is easy to understand to participants of the meeting. In theconfiguration designation image 500, a pattern image generating unit which generates image information corresponding to a predetermined pattern image is allocated virtually as an image source and is shown in the form of an icon that can be designated. Thus, a predetermined pattern image can be displayed in the overall image by an intuitive operation similar to handling of other image sources. - In the first embodiment, the
PC 200 generates an image that shows theicon 550 of the own device in a different form from theicons 552 to 556 of the other terminal devices and thevirtual source icons icon arrangement area 540. Thus, the participant can more easily operate theicon 550 of the own device that is operated more frequently than theicons 552 to 556 of the other terminal devices and thevirtual source icons overall image 20 including individual images based on image information from thePC 200 is displayed by theprojector 100, operations for changing the configuration of theoverall image 20 can be carried out more easily. Thus, when each participant changes the configuration of theoverall image 20 using each participant'sPC 200, each participant can carry out desired operations efficiently. - Moreover, according to the first embodiment, as the
PC 200 fixes the display position of theicon 550 of the own device, the participant can more easily operate the icon of the own device that is operated more frequently than theicons 552 to 556 of the other terminal devices and theicons - Furthermore, in the first embodiment, the
projector 100 displays individual images based on image information from thefirst PC 200 that transmitted participation request information, irrespective of whether there is an explicit display instruction or not. Meanwhile, individual images based on image information from the second andsubsequent PCs 200 that transmitted participation request information are not displayed if there is no explicit display instruction, and these individual images are displayed when there is an explicit display instruction. Thus, even when participation requests or the like is accepted from theplural PCs 200, the overall image can be displayed properly and quickly. - For example, if the display device displays individual images based on image information from the second and
subsequent PCs 200 that transmitted participation request information, the existing configuration of the overall image changes, causing disturbance to the presentation or the like. On the other hand, according to the first embodiment, theprojector 100 can accept participation requests or the like from the second andsubsequent PCs 200 without changing the existing configuration of the overall image. Also, for example, if the display device does not display individual images based on image information from all thePCs 200 that transmitted participation request information, thefirst PC 200 always needs to give an explicit display instruction and convenience is impaired. On the other hand, according to the first embodiment, theprojector 100 can instantly display individual images based on image information from thefirst PC 200 that transmitted participation request information and therefore convenience is enhanced. - In the first embodiment, an example where a pattern image generating unit allocated as a virtual source is provided within each PC is described. However, embodiments of the invention are not limited to this. In a second embodiment, a pattern image generating unit allocated as a virtual source is provided in a projector. Such a projector in the second embodiment can be applied to the display system shown in
FIG. 1 . In this case, the display system is provided with PCs having a configuration without a pattern image generating unit, instead of the PCs 200-1 to 200-4. -
FIG. 13 shows a functional block diagram showing an example of the configuration of the projector according to the second embodiment. InFIG. 13 , the same parts as inFIG. 2 are denoted by the same reference numerals and the description thereof is omitted where appropriate. - A
projector 100 a according to the second embodiment includes a display-side communication unit 110, a display-sideinformation generating unit 120 a, a display-sideimage generating unit 130, a display-side storage unit 140, a display-side update unit 150, a pattern image generating unit (pattern image source) 170 a, and aprojection unit 190. Theprojector 100 a is different from theprojector 100 shown inFIG. 2 in that the patternimage generating unit 170 a is added and that processing by the display-sideinformation generating unit 120 a is different because of the addition of the patternimage generating unit 170 a. The patternimage generating unit 170 a generates image information corresponding to a predetermined pattern image. The predetermined pattern image may be a total black image, a total white image, user logo image or an image including text information. For example, the patternimage generating unit 170 a generates image information usingimage data 142. Theprojection unit 190 projects an image generated by the display-sideimage generating unit 130 or a pattern image generated by the patternimage generating unit 170 a, on a screen SCR. - The functions of each unit forming the
projector 100 a may be realized by hardware. For example, the functions of the display-side communication unit 110 are realized by a wireless communication unit or the like. The functions of the display-sideinformation generating unit 120 a and the display-side update unit 150 are realized by a CPU or the like. The functions of the display-sideimage generating unit 130 and the patternimage generating unit 170 a are realized by an image processing circuit or the like. The functions of the display-side storage unit 140 are realized by a RAM or the like. Theprojection unit 190 is realized by a lamp, a liquid crystal panel, a liquid crystal drive circuit, a lens and the like. -
FIG. 14 shows a functional block diagram showing an example of the configuration of the PC in the second embodiment. The same parts as inFIG. 3 are denoted by the same reference numerals and the description thereof is omitted where appropriate. - A PC 200 a includes a terminal-
side communication unit 210, a terminal-side information generating unit 220 a, a terminal-sideimage generating unit 230, a terminal-side storage unit 240, a terminal-side update unit 250, aninput unit 260, and a terminal-side display unit 290. The terminal-side information generating unit 220 a includes asource setting unit 222 and an output processing unit 224 a. The PC 200 a is different from thePC 200 shown inFIG. 3 in that the pattern image generating unit is omitted and that processing by the terminal-side information generating unit 220 a is different because of the omission of the pattern image generating unit. The output processing unit 224 a performs output processing of various kinds of information to theprojector 100 a. For example, the output processing unit 224 a can gives an instruction to display a pattern image to theprojector 100 a according to a setting content of thesource setting unit 222. The terminal-side display unit 290 displays an image generated by the terminal-sideimage generating unit 230. - The functions of each unit forming the PC 200 a may be realized by hardware. For example, the functions of the terminal-
side communication unit 210 are realized by a wireless communication unit or the like. The functions of the terminal-side information generating unit 220 a and the terminal-side update unit 250 are realized by a CPU or the like. The functions of theinput unit 260 are realized by a USB port or the like connected to a keyboard or mouse. The functions of the terminal-sideimage generating unit 230 are realized by an image processing circuit or the like. The functions of the terminal-side storage unit 240 are realized by a RAM or the like. The functions of the terminal-side display unit 290 are realized by a backlight, a liquid crystal panel and a liquid crystal drive circuit and the like. The computer of the PC 200 a may function as the terminal-sideimage generating unit 230 or the like by reading a program stored in aninformation storage medium 280. - Next, a procedure for projecting an
overall image 20 in response to a configuration change request for an image in the display system of the second embodiment will be described. -
FIG. 15 shows a flowchart illustrating an example of an image display procedure in the PC 200 a according to the second embodiment. InFIG. 15 , the same steps as inFIG. 4 are denoted by the same reference numerals. -
FIG. 16 shows a flowchart illustrating an example of an image display procedure in theprojector 100 a according to the second embodiment. InFIG. 16 , the same steps as inFIG. 5 are denoted by the same reference numerals. -
FIG. 17 shows a sequence diagram illustrating exchange of information between the PC 200 a and theprojector 100 a according to the second embodiment. InFIG. 17 , steps corresponding toFIG. 15 andFIG. 16 are shown as well. - First, the image display procedure in the PC 200 a will be described with reference to
FIG. 15 . InFIG. 15 , steps S1 to S5 are the same as step S1 to S5 shown inFIG. 4 and therefore will not be described further. - When there is a change in the configuration in step S5 (step S5: Y), the terminal-side information generating unit 220 a determines whether the configuration after the change includes a virtual source or not (step S6 a). When an icon of virtual source is included (step S6 a: Y), the terminal-side information generating unit 220 a generates configuration change request information including a virtual source, reflecting the result of designation by the source setting unit 222 (step S7 a). When no icon of virtual source is included (step S6 a: N), the terminal-side information generating unit 220 a generates configuration change request information that does not include any virtual source, reflecting the result of designation by the source setting unit 222 (step S8 a). After that the terminal-
side communication unit 210 transmits the configuration change request information generated in step S7 a or step S8 a to theprojector 100 a (step S9 a). - Following step S9 a, or when there is no change in the configuration (step S5: N), the terminal-side information generating unit 220 a determines whether transmission start request information for image information is received by the terminal-
side communication unit 210 from theprojector 100 a or not (step S10 a). When transmission start request information is received (step S10 a: Y), the terminal-sideimage generating unit 230 generates image information representing the graph image or the like shown inFIG. 1 based on theimage data 242. The terminal-side communication unit 210 transmits the image information to theprojector 100 a (step S11 a). At this point, the terminal-side display unit 290 displays an image corresponding to the image information. In step S11 a, when the configuration after the change includes a virtual source, the output processing unit 224 a of the terminal-side information generating unit 220 a performs processing to generate and designate display of a pattern image to theprojector 100 a. That is, when a change request in which an icon corresponding to a pattern image source is designated in relation to the position designation area is admitted on the basis of a response from theprojector 100 a, the output processing unit 224 a performs processing to output an instruction to display the predetermined pattern image to theprojector 100 a. - Following step S11 a, or when transmission start request information is not received (step S10 a: N), the terminal-side information generating unit 220 a determines whether transmission stop request information for image information is received by the terminal-
side communication unit 210 from theprojector 100 a or not (step S12 a). When transmission stop request information is received (step S12 a: Y), the terminal-sideimage generating unit 230 stops generating image information and the terminal-side communication unit 210 stops transmitting image information (step S13 a). - The participant can disconnect the communication of the participant's own PC 200 a by selecting “Leave” from a sub-menu of “Tool” in the
configuration designation image 500. Moreover, the participant can disconnect the communication of all the PCs 200 a by selecting “End Meeting” from the sub-menu. Following step S13 a, or in step S12 a when transmission stop request information is not received (step S12 a: N), the terminal-side information generating unit 220 a determines whether “End Meeting” is selected or not, based on operation information from the input unit 260 (step S14 a). When “End Meeting” is selected (step S14 a: Y), the terminal-side information generating unit 220 a generates end request information. The terminal-side communication unit 210 transmits the end request information to theprojector 100 a (step S15 a). - When “End Meeting” is not selected (step S14 a: N), the terminal-side information generating unit 220 a determines whether end notification information transmitted from the
projector 100 a in response to the reception of end request information is received by the terminal-side communication unit 210 or not (step S16 a). Following step S15 a, or when end notification information is received (step S16 a: Y), the PC 200 a ends the series of processing (END). When end notification information is not received in step S16 a (step S16 a: N), the PC 200 a returns to step S3 and repeats execution of the processing of steps S3 to S16 a. - Next, the image display procedure in the
projector 100 a will be described with reference toFIG. 16 . Steps p1 to P6 inFIG. 16 are the same as steps P1 to P6 inFIG. 4 and therefore will not be described further. - Following step P6, or when configuration change request information is not received in step P5 (step P5: N), the display-side
information generating unit 120 a determines whether the image configuration information includes a virtual source or not (step P7 a). When a virtual source is included (step P7 a: Y), the display-side update unit 150 updates theimage configuration data 144 and performs processing to add a pattern image of the virtual source to the overall image (step P8 a). - Following step P8 a, or when no virtual source is included (step P7 a: N), the display-
side update unit 150 determines whether image information is received by the display-side communication unit 110 from the PC 200 a or not (step P9 a). When image information is received (step P9 a: Y), the display-side update unit 150 updates theimage data 142 based on the image information. In this case, the display-sideimage generating unit 130 generates image information based on theimage data 142 and theimage configuration data 144. Also, when a virtual source is included in step P7 a, the patternimage generating unit 170 a generates image information corresponding to the pattern image. Theprojection unit 190 projects theoverall image 20 generated on the basis of the image information generated by the display-side generating unit 130 or the patternimage generating unit 170 a, on the screen SCR (step P10 a). Meanwhile, the display-sideimage generating unit 130 may also have the functions of the patternimage generating unit 170 a. Moreover, the display-sideimage generating unit 130 may generate theoverall image 20. - Following step P10 a, or when image information is not received in step P9 a (step P9 a: N), the display-side
information generating unit 120 a determines whether end request information is received by the display-side communication unit 110 from the PC 200 a or not (step P11 a). When end request information is received (step P11 a: Y), the display-sideinformation generating unit 120 a generates end notification information. The display-side communication unit 110 transmits the end notification information to each PC 200 a. As the meeting ends, the display-side update unit 150 updates thedevice management data 146 and theimage configuration data 144, for example, to initial states or the like (step P12 a). - Following step P12 a, or when end request information is not received in step P11 a (step P11 a: N), the
projector 100 a determines whether a projection end instruction is given or not (step P13 a). When a projection end instruction is given (step P13 a: Y), theprojector 100 a ends the foregoing series of processing (END). When a projection end instruction is not given (step P13 a: N), theprojector 100 a returns to step P1 and the display-sideinformation generating unit 120 a determines whether state confirmation information is received by the display-side communication unit 110 from the PC 200 a or not. - As described above, in the second embodiment, when image configuration information including a virtual source from the PC 200 a is received by the
projector 100 a, the patternimage generating unit 170 a provided in theprojector 100 a generates a pattern image. Thus, as the pattern image generating unit provided in theprojector 100 a is allocated virtually as an image source, a predetermined pattern image can be displayed in the overall image by an intuitive operation similar to handling of other image sources, as in the first embodiment. - In the first embodiment or the second embodiment, an example of a display system including four PCs is described, as shown in
FIG. 1 . However, embodiments of the invention are not limited to this. A display system according to the invention may include three or less PCs, or five or more PCs. -
FIG. 18 shows an example of a configuration designation image according to a modification of the first embodiment or the second embodiment. InFIG. 18 , the same parts as inFIG. 7 are denoted by the same reference numerals and the description thereof is omitted where appropriate. - For example, when the number of
PCs 200 participating in the meeting is increased and the icons thereof cannot be displayed on theicon arrangement area 540, the terminal-sideimage generating unit 230 generates aconfiguration designation image 501 in which ascroll bar image 592 is added to theicon arrangement area 540. Thus, the participant can scroll thescroll bar image 592 and thereby can display the icon images ofPCs 200 that cannot be displayed before scrolling. - The programs, the information storage medium, the terminal device and the display system or the like are described above according to one of the embodiments. However, the invention is not limited to one of the embodiments. For example, the invention can be carried out in various forms without departing from the scope of the invention and the following modifications can be made.
- (1) In one of the embodiments or the modification thereof, an example in which a projector and each PC are arranged in the same room is described, as shown in
FIG. 1 . However, the invention is not limited to this. The projector and the PC may be arranged in different rooms. - (2) In one of the embodiments or the modification thereof, the display system is described as including one projector. However, the invention is not limited to this. For example, the display system according to the invention may include two or more projectors. In this case, one projector serves as a master and can control the other projector to project the same screen.
- (3) In one of the embodiments or the modification thereof, the connection form between the projector and the PC is described as wireless connection. However, the invention is not limited to this. For example, the projector and the PC may be connected by wired connection via a LAN cable or the like.
- (4) In one of the embodiments or the modification thereof, a projector is used as an example of the display device according to the invention. However, the invention is not limited to this. As the display device according to the invention, for example, a liquid crystal display, CRT (cathode ray tube), organic EL (electroluminescence) display, an electronic device having a projection function (for example, a digital camera or mobile phone) or the like may be used as well as a projector.
- (5) In one of the embodiments or the modification thereof, a PC is used as an example of the terminal device according to the invention. However, the invention is not limited to this. As the terminal device according to the invention, for example, a mobile phone, personal digital assistant or the like may be used as well as a PC.
- (6) The computer provided in the projector according to one of the embodiments or the modification thereof may read a program stored in an information storage medium and thus function as the display-side
image generating unit 130 or the like. As such an information storage medium, for example, a CD-ROM, DVD-ROM, ROM, RAM, HDD or the like may be applied. - (7) The projector according to one of the embodiments or the modification thereof is not limited to a liquid crystal projector (transmitting type, reflecting type) and may be, for example, a projector using a digital micromirror device or the like. Also, the
projection unit 190 may employ a self-luminous device including a solid-state light source such as an organic EL element, silicon light-emitting element, laser diode or LED (light emitting diode) instead of a lamp. The functions of the projector may be split to plural devices (for example, a PC and a projector or the like). - (8) In one of the embodiments or the modification thereof, an example in which a virtual source is provided within either a projector or a PC is described. However, the invention is not limited to this. For example, the functions of a pattern image generating unit as a virtual source may be split to the projector and the PC. Specifically, the projector may generate image information corresponding to a user logo image as a pattern image, and the PC may generate image information corresponding to a total black image or total white image as a pattern image.
- (9) In one of the embodiments or the modification thereof, an example in which various icons as shown in FIG. 7 are displayed is described. However, the invention is not limited to this. For example, rectangular icons may be used and the invention is not limited to display forms of icons.
- (10) In one of the embodiments or the modification thereof, the invention is described as a program, information storage medium, terminal device, and display device or the like. However, the invention is not limited to these. For example, the invention may include an image generating method for the PC according to one of the embodiments or the modification thereof, an image display method for the projector, a program that realizes the image display method, and a computer-readable information storage medium in which the program is stored, or the like.
Claims (14)
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Also Published As
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JP5585506B2 (en) | 2014-09-10 |
CN102685426A (en) | 2012-09-19 |
US9160994B2 (en) | 2015-10-13 |
CN102685426B (en) | 2015-04-01 |
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